answer: John tells #Person1# he's single and doesn't know when to get married.
documents: #Person1#: John, if you don't mind, I'd like to ask you a personal question.
  #Person2#: I don't mind at all.
  #Person1#: All right. Are you married?
  #Person2#: To tell you the truth, I'm not married. I'm still single.
  #Person1#: Then, when do you plan to get married?
  #Person2#: I don't know. It's still up in tha air.