> For clean Markdown of any page, append .md to the page URL. > For a complete documentation index, see https://docs.nvidia.com/nemo/labs-voice-agent/llms.txt. > For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://docs.nvidia.com/nemo/labs-voice-agent/_mcp/server. # nemo_voice_agent.evaluation.tools.eva_airline_params Pydantic parameter models and enums for airline tool functions. Each tool function has a corresponding \*Params model that validates and types its incoming `params` dict. Call `Model.model_validate(params)` at the top of the tool function and catch `ValidationError` to produce a standard `{"status": "error", ...}` response for bad LLM-supplied inputs. Enums use `StrEnum` so values serialise to plain strings in JSON and compare equal to their string counterparts (e.g. `FareClass.main_cabin == "main_cabin"`). ## Module Contents ### Classes | Name | Description | | -------------------------------------------------------------------------------------------------------------------- | -------------------------------------------------------------- | | [`AddBaggageAllowanceParams`](#nemo_voice_agent-evaluation-tools-eva_airline_params-AddBaggageAllowanceParams) | - | | [`AddMealRequestParams`](#nemo_voice_agent-evaluation-tools-eva_airline_params-AddMealRequestParams) | - | | [`AddToStandbyParams`](#nemo_voice_agent-evaluation-tools-eva_airline_params-AddToStandbyParams) | - | | [`AssignSeatParams`](#nemo_voice_agent-evaluation-tools-eva_airline_params-AssignSeatParams) | - | | [`CancelReservationParams`](#nemo_voice_agent-evaluation-tools-eva_airline_params-CancelReservationParams) | - | | [`CancellationReason`](#nemo_voice_agent-evaluation-tools-eva_airline_params-CancellationReason) | - | | [`CreditReason`](#nemo_voice_agent-evaluation-tools-eva_airline_params-CreditReason) | - | | [`FareClass`](#nemo_voice_agent-evaluation-tools-eva_airline_params-FareClass) | - | | [`FareClassOrAny`](#nemo_voice_agent-evaluation-tools-eva_airline_params-FareClassOrAny) | Fare class for search queries; `any` means cheapest available. | | [`GetDisruptionInfoParams`](#nemo_voice_agent-evaluation-tools-eva_airline_params-GetDisruptionInfoParams) | - | | [`GetFlightStatusParams`](#nemo_voice_agent-evaluation-tools-eva_airline_params-GetFlightStatusParams) | - | | [`GetReservationParams`](#nemo_voice_agent-evaluation-tools-eva_airline_params-GetReservationParams) | - | | [`IssueHotelVoucherParams`](#nemo_voice_agent-evaluation-tools-eva_airline_params-IssueHotelVoucherParams) | - | | [`IssueMealVoucherParams`](#nemo_voice_agent-evaluation-tools-eva_airline_params-IssueMealVoucherParams) | - | | [`IssueTravelCreditParams`](#nemo_voice_agent-evaluation-tools-eva_airline_params-IssueTravelCreditParams) | - | | [`MealType`](#nemo_voice_agent-evaluation-tools-eva_airline_params-MealType) | - | | [`ProcessRefundParams`](#nemo_voice_agent-evaluation-tools-eva_airline_params-ProcessRefundParams) | - | | [`RebookFlightParams`](#nemo_voice_agent-evaluation-tools-eva_airline_params-RebookFlightParams) | - | | [`RebookingType`](#nemo_voice_agent-evaluation-tools-eva_airline_params-RebookingType) | - | | [`RefundType`](#nemo_voice_agent-evaluation-tools-eva_airline_params-RefundType) | - | | [`SearchRebookingOptionsParams`](#nemo_voice_agent-evaluation-tools-eva_airline_params-SearchRebookingOptionsParams) | - | | [`SeatPreference`](#nemo_voice_agent-evaluation-tools-eva_airline_params-SeatPreference) | - | | [`TransferToAgentParams`](#nemo_voice_agent-evaluation-tools-eva_airline_params-TransferToAgentParams) | - | | [`VoucherReason`](#nemo_voice_agent-evaluation-tools-eva_airline_params-VoucherReason) | - | ### Functions | Name | Description | | -------------------------------------------------------------------------------------------------------------- | ----------------------------------------------------------------------- | | [`validation_error_response`](#nemo_voice_agent-evaluation-tools-eva_airline_params-validation_error_response) | Convert a Pydantic `ValidationError` to a standard tool error response. | ### Data [`AirportCode`](#nemo_voice_agent-evaluation-tools-eva_airline_params-AirportCode) [`ConfirmationNumber`](#nemo_voice_agent-evaluation-tools-eva_airline_params-ConfirmationNumber) [`DateStr`](#nemo_voice_agent-evaluation-tools-eva_airline_params-DateStr) [`FIELD_ERROR_TYPES`](#nemo_voice_agent-evaluation-tools-eva_airline_params-FIELD_ERROR_TYPES) [`FlightNumberStr`](#nemo_voice_agent-evaluation-tools-eva_airline_params-FlightNumberStr) [`JourneyIdStr`](#nemo_voice_agent-evaluation-tools-eva_airline_params-JourneyIdStr) [`PassengerIdStr`](#nemo_voice_agent-evaluation-tools-eva_airline_params-PassengerIdStr) ### API ```python class nemo_voice_agent.evaluation.tools.eva_airline_params.AddBaggageAllowanceParams() ``` **Bases:** `BaseModel` **`confirmation_number`** --- **`flight_number`** --- **`journey_id`** --- **`num_bags`** --- ```python class nemo_voice_agent.evaluation.tools.eva_airline_params.AddMealRequestParams() ``` **Bases:** `BaseModel` **`confirmation_number`** --- **`flight_number`** --- **`journey_id`** --- **`meal_type`** --- **`passenger_id`** --- ```python class nemo_voice_agent.evaluation.tools.eva_airline_params.AddToStandbyParams() ``` **Bases:** `BaseModel` **`confirmation_number`** --- **`journey_id`** --- **`passenger_ids`** --- ```python class nemo_voice_agent.evaluation.tools.eva_airline_params.AssignSeatParams() ``` **Bases:** `BaseModel` **`confirmation_number`** --- **`flight_number`** --- **`journey_id`** --- **`passenger_id`** --- **`seat_preference`** --- ```python class nemo_voice_agent.evaluation.tools.eva_airline_params.CancelReservationParams() ``` **Bases:** `BaseModel` **`cancellation_reason`** --- **`confirmation_number`** --- **`journey_id`** --- ```python class nemo_voice_agent.evaluation.tools.eva_airline_params.CancellationReason ``` **Bases:** `enum.Enum` **`bereavement`** --- **`irrops_refund`** --- **`medical`** --- **`rule_24_hour`** --- **`schedule_unacceptable`** --- **`voluntary`** --- ```python class nemo_voice_agent.evaluation.tools.eva_airline_params.CreditReason ``` **Bases:** `enum.Enum` **`cancellation_non_refundable`** --- **`downgrade_compensation`** --- **`fare_difference_negative`** --- **`goodwill`** --- **`service_recovery`** --- ```python class nemo_voice_agent.evaluation.tools.eva_airline_params.FareClass ``` **Bases:** `enum.Enum` **`basic_economy`** --- **`business`** --- **`first`** --- **`main_cabin`** --- **`premium_economy`** --- ```python class nemo_voice_agent.evaluation.tools.eva_airline_params.FareClassOrAny ``` **Bases:** `enum.Enum` Fare class for search queries; `any` means cheapest available. **`any`** --- **`basic_economy`** --- **`business`** --- **`first`** --- **`main_cabin`** --- **`premium_economy`** --- ```python class nemo_voice_agent.evaluation.tools.eva_airline_params.GetDisruptionInfoParams() ``` **Bases:** `BaseModel` **`date`** --- **`flight_number`** --- ```python class nemo_voice_agent.evaluation.tools.eva_airline_params.GetFlightStatusParams() ``` **Bases:** `BaseModel` **`flight_date`** --- **`flight_number`** --- ```python class nemo_voice_agent.evaluation.tools.eva_airline_params.GetReservationParams() ``` **Bases:** `BaseModel` **`confirmation_number`** --- **`last_name`** --- ```python class nemo_voice_agent.evaluation.tools.eva_airline_params.IssueHotelVoucherParams() ``` **Bases:** `BaseModel` **`confirmation_number`** --- **`num_nights`** --- **`passenger_id`** --- ```python class nemo_voice_agent.evaluation.tools.eva_airline_params.IssueMealVoucherParams() ``` **Bases:** `BaseModel` **`confirmation_number`** --- **`passenger_id`** --- **`voucher_reason`** --- ```python class nemo_voice_agent.evaluation.tools.eva_airline_params.IssueTravelCreditParams() ``` **Bases:** `BaseModel` **`amount`** --- **`confirmation_number`** --- **`credit_reason`** --- **`passenger_id`** --- ```python class nemo_voice_agent.evaluation.tools.eva_airline_params.MealType ``` **Bases:** `enum.Enum` **`child`** --- **`diabetic`** --- **`gluten_free`** --- **`halal`** --- **`hindu`** --- **`kosher`** --- **`low_sodium`** --- **`none`** --- **`standard`** --- **`vegan`** --- **`vegetarian`** --- ```python class nemo_voice_agent.evaluation.tools.eva_airline_params.ProcessRefundParams() ``` **Bases:** `BaseModel` **`confirmation_number`** --- **`refund_amount`** --- **`refund_type`** --- ```python class nemo_voice_agent.evaluation.tools.eva_airline_params.RebookFlightParams() ``` **Bases:** `BaseModel` **`confirmation_number`** --- **`flight_number`** --- **`journey_id`** --- **`new_fare_class`** --- **`new_journey_id`** --- **`rebooking_type`** --- **`waive_change_fee`** --- ```python class nemo_voice_agent.evaluation.tools.eva_airline_params.RebookingType ``` **Bases:** `enum.Enum` **`irrops_cancellation`** --- **`irrops_delay`** --- **`irrops_schedule_change`** --- **`missed_connection_airline_fault`** --- **`missed_flight_passenger_fault`** --- **`same_day`** --- **`voluntary`** --- ```python class nemo_voice_agent.evaluation.tools.eva_airline_params.RefundType ``` **Bases:** `enum.Enum` **`ancillary_fees`** --- **`full_fare`** --- **`partial_fare`** --- **`taxes_only`** --- ```python class nemo_voice_agent.evaluation.tools.eva_airline_params.SearchRebookingOptionsParams() ``` **Bases:** `BaseModel` **`date`** --- **`destination`** --- **`fare_class`** --- **`origin`** --- **`passenger_count`** --- ```python class nemo_voice_agent.evaluation.tools.eva_airline_params.SeatPreference ``` **Bases:** `enum.Enum` **`aisle`** --- **`middle`** --- **`no_preference`** --- **`window`** --- ```python class nemo_voice_agent.evaluation.tools.eva_airline_params.TransferToAgentParams() ``` **Bases:** `BaseModel` **`confirmation_number`** --- **`issue_summary`** --- **`transfer_reason`** --- ```python class nemo_voice_agent.evaluation.tools.eva_airline_params.VoucherReason ``` **Bases:** `enum.Enum` **`cancellation_wait_same_day`** --- **`delay_over_2_hours`** --- **`delay_over_4_hours`** --- **`irrops_overnight`** --- ```python nemo_voice_agent.evaluation.tools.eva_airline_params.validation_error_response( exc: pydantic.ValidationError, model: type[pydantic.BaseModel] ) -> dict ``` Convert a Pydantic `ValidationError` to a standard tool error response. Produces `{"status": "error", "error_type": ..., "message": ...}` matching the format returned by inline validation in each tool function. Uses `model.model_fields` to pull `description` and `examples` from the field's `Field(...)` metadata for human-friendly messages. ```python nemo_voice_agent.evaluation.tools.eva_airline_params.AirportCode = Annotated[str, Field(pattern='^[A-Za-z]{3}$', description='3-letter airport code... ``` ```python nemo_voice_agent.evaluation.tools.eva_airline_params.ConfirmationNumber = Annotated[str, Field(pattern='^[A-Za-z0-9]{6}$', description='6 alphanumeric cha... ``` ```python nemo_voice_agent.evaluation.tools.eva_airline_params.DateStr = Annotated[str, Field(pattern='^\\d{4}-\\d{2}-\\d{2}$', description='YYYY-MM-DD')... ``` ```python nemo_voice_agent.evaluation.tools.eva_airline_params.FIELD_ERROR_TYPES: dict[str, tuple[str, str]] = {'rebooking_type': ('invalid_rebooking_type', 'rebooking_type'), 'new_fare_class... ``` ```python nemo_voice_agent.evaluation.tools.eva_airline_params.FlightNumberStr = Annotated[str, Field(pattern='^[A-Za-z]{2,3}\\d{1,4}$', description='2-3 letters... ``` ```python nemo_voice_agent.evaluation.tools.eva_airline_params.JourneyIdStr = Annotated[str, Field(pattern='^FL_(?:[A-Za-z]{2,3}\\d{1,4}_)+\\d{8}$', descripti... ``` ```python nemo_voice_agent.evaluation.tools.eva_airline_params.PassengerIdStr = Annotated[str, Field(pattern='^PAX\\d+$', description='PAX', examples=['... ```