answer: #Person2# invites Shelley to have lunch together, but Shelley is too busy to come.
documents: #Person1#: Hello?
  #Person2#: Hi, Shelley. Have you had lunch?
  #Person1#: Not yet.
  #Person2#: So shall we have lunch together? I'd like to take you this time.
  #Person1#: I'd like to, but I can't.
  #Person2#: How come?
  #Person1#: I'Ve a lot of paper work to do right now. I'm behind schedule.
  #Person2#: All right. Can we make it another time?
  #Person1#: Sure, thanks.
  #Person2#: I'll call you later. Bye.
  #Person1#: Bye.