ULAir Reservation
fun ULAirReservation(pnr: String? = null, reservationType: String? = null, tripType: ULAirTripType, itineraries: ArrayList<ULItinerary>, insurances: ArrayList<ULInsurance>? = null, origin: String? = null, destination: String? = null, price: Int? = null)
Init method to create a ULAirReservation object with the given parameters