answer: #Person1# asks Amy to call #Person1# when she comes to #Person1#'s birthday party so that #Person1# can pick her up at the station. Then Amy checks #Person1#'s phone number.
documents: #Person1#: Hello, Amy. Are you coming to my birthday party?
  #Person2#: Yes, I am. How do I get to your house from the station?
  #Person1#: Well, call me when you get to the station and I'll come and pick you up in my car.
  #Person2#: Are you sure it won't be too much trouble?
  #Person1#: It's no trouble at all. It only takes about 15 minutes.
  #Person2#: Oh, I want to check your phone number. Is it 828816887?
  #Person1#: No. It's 81881688.
  #Person2#: Oh, really? I'm glad I checked.
  #Person1#: What time do you plan to arrive at the station?
  #Person2#: I plan to get there around 8:30.
  #Person1#: OK. See you then.
  #Person2#: See you. Goodbye.