Situation 2:Checking in at the airport
Cpt.Li:Is there any change to the departure time？
Staff A:Still scheduled for 0925.
Cpt.Li:Can we check in now？
Staff A:The security check has already begun.
Staff B:Must all carry-on luggage go through the security check？
Staff A:Yes.Those who finish luggage check get in line here，please！
Cpt.Li:No luggage ticket？
Staff B:No，the luggage is always kept with you.
Staff C:Buckle up，please！And put on your earphone！
Staff C:The plane is about to land.
