answer: #Person1# wants to call on #Person2# at 7. #Person2# agrees.
documents: #Person1#: Do you mind if we call on you this evening?
  #Person2#: Of course not, we'd be happy if you could come. What time will you be able to come?
  #Person1#: How about seven o'clock?
  #Person2#: Fine. We'll be expecting you.