answer: #Person2# is looking for a book on the presidential election system in the United States. #Person1# suggests the textbook section, the paperback section, and Books in Print and can order the book for #Person2# if it's not in stock.
documents: #Person1#: Can I help you?
  #Person2#: Yes, I'm looking for a book on the presidential election system in the United States.
  #Person1#: Well, all of our textbooks are arranged by subject and course number in the back of the store. Is this a required text for one of the University's political science courses?
  #Person2#: No, it isn't. I've already looked through all the political science books in the back, but the ones I saw only had a few pages, at most, on the topic.
  #Person1#: How about the paperback section? There may be something there.
  #Person2#: Okay.
  #Person1#: Or better yet, you should try looking in Books in Print.
  #Person2#: I've never heard of that. What is it?
  #Person1#: It's an index that lists all of the books currently available from publishers. If you have a specific book in mind, you can look under the author's last name.
  #Person2#: But I don't.
  #Person1#: Then look directly under your subject, presidential elections.
  #Person2#: What happens if I find a book I want?
  #Person1#: Well, if it's not in stock, we can order it for you.