@type t() :: %Travel.Flights.Types.AirlineInitiatedChange{
  action_taken: (atom() | nil) | nil,
  action_taken_at: (String.t() | nil) | nil,
  added: [Travel.Flights.Types.OrderSlice.t()] | nil,
  available_actions: [atom()] | nil,
  created_at: String.t() | nil,
  id: String.t() | nil,
  order_id: String.t() | nil,
  removed: [Travel.Flights.Types.OrderSlice.t()] | nil,
  travel_agent_ticket: (Travel.Flights.Types.TravelAgentTicket.t() | nil) | nil,
  updated_at: String.t() | nil
}