I lost my return ticket and was stranded in Thailand.我的回程票弄丢了，结果被困在了泰国。If you take your parachute into the air you have a certain return ticket.你要是带着降落伞上天，在某种意义上就可算是有了一张回程票。Please retain the return portion of your ticket for your journey home.请保留返家的回程票。