answer: Alice comes to return the book to Tom. Tom wants to talk with her but Alice has to go.
documents: #Person1#: Nice to see you Alice, come in, please.
  #Person2#: Thank you Tom, but I am afraid not now, I come only to return the book borrowed from you.
  #Person1#: Wonderful I've been waiting for you a long time and longing to know, what you think of it?
  #Person2#: It is very interesting and I've learned a lot from it.
  #Person1#: Well, so it is with me.
  #Person2#: Oh sorry, I can't go on talking about it with you any longer.
  #Person1#: It doesn't matter, better stay here for another 10 minutes.
  #Person2#: No, I'll go and buy some food in the shop, and I have to say goodbye to you.
  #Person1#: Goodbye.