@type t() :: %Travel.Flights.Types.OfferRequest{
  cabin_class: (atom() | nil) | nil,
  created_at: String.t() | nil,
  id: String.t() | nil,
  live_mode: boolean() | nil,
  max_connections: (integer() | nil) | nil,
  offers: ([Travel.Flights.Types.Offer.t()] | nil) | nil,
  passengers: [Travel.Flights.Types.OfferRequestPassenger.t()] | nil,
  private_fares: ([Travel.Flights.Types.OfferPrivateFare.t()] | nil) | nil,
  slices: [Travel.Flights.Types.OfferRequestSlice.t()] | nil
}