@type t() :: %Merchant.AirlineData{
  booking_id: String.t() | nil,
  booking_url: (String.t() | nil) | nil,
  crs_code: (String.t() | nil) | nil,
  fulfillment_date: (DateTime.t() | nil) | nil,
  journey_legs: ([Merchant.JourneyLog.t()] | nil) | nil,
  passengers: ([Merchant.Passenger.t()] | nil) | nil,
  refundability: (String.t() | nil) | nil,
  ticket_change_indicator: (String.t() | nil) | nil,
  ticket_type: (String.t() | nil) | nil,
  tickets_purchase: (boolean() | nil) | nil,
  type: String.t() | nil
}