answer: #Person1# can't find the train ticket. #Person2# advises checking at the inquiry desk.
documents: #Person1#: Oh, no. It seems that I've lost my train ticket.
  #Person2#: Are you kidding? The train leaves in an hour. Where did you put it?
  #Person1#: It was in my pocket, but now I can't find it.
  #Person2#: Is it in the other pocket?
  #Person1#: No, it is not here. Damn it! I'm going to have to buy another ticket.
  #Person2#: Let's go to the inquiry desk first to check whether anyone has got it and turned it in.
  #Person1#: OK.