get
Options for which information to return in the response. The value must be lower case. * history - Include itinerary history, showing details of the changes made to this itinerary. Changes from the property/supplier have an event_source equal to other in the response. * history_v2 - Include itinerary history, showing details of the changes made to this itinerary. Changes from the property/supplier have an event_source equal to supplier in the response. See the Itinerary history for details.