com.umlet.element.custom.InteractionFrame14040049060opt -- pring boarding passcom.umlet.element.custom.InteractionFrame27032034050ref -- check in luggagecom.umlet.element.base.Relation290904043020;20;20;410com.umlet.element.custom.InteractionFrame14031049070opt -- com.umlet.element.custom.InteractionFrame14022049060ref -- choose flight and seatcom.umlet.element.custom.InteractionFrame14014049060ref -- login passengercom.umlet.element.custom.InteractionFrame10125670355strict -- -. -. -.com.umlet.element.base.Class4803015060Check-In-Machinecom.umlet.element.base.Relation540704045020;20;20;430com.umlet.element.base.Actor2701085120Passenger