answer: #Person1# says farewell to #Person2# to meet a midnight plane.
documents: #Person1#: I'm afraid I must be going now.
  #Person2#: Must you? It's still early.
  #Person1#: I'm afraid I really must. I have to meet a midnight plane.
  #Person2#: In that case, we can't keep you.
  #Person1#: Well, thank you very much for a pleasant evening.
  #Person2#: Thank you for coming. You must come again.
  #Person1#: Thank you. I will. Good-bye.
  #Person2#: Good-bye. I wish you a very good journey home.