@type t() :: %Travel.Flights.Types.OfferAvailableService{
  id: String.t() | nil,
  metadata: (map() | nil) | nil,
  passenger_ids: [String.t()] | nil,
  segment_ids: [String.t()] | nil,
  total_amount: String.t() | nil,
  total_currency: String.t() | nil,
  type: atom() | nil
}