answer: #Person2# received a notice of penalty for a lost book, but #Person2#'s sure #Person2# returned the book. #Person2# persuades #Person1# to let #Person2# check the shelf and finds the lost book. #Person1# feels sorry.
documents: #Person1#: Good morning.
  #Person2#: Good morning. I was wondering if you can help me. I received this notice yesterday afternoon.
  #Person1#: Let me see. It's $ 10 for a lost book.
  #Person2#: But I'm sure I returned it.
  #Person1#: Our records show that you checked it out on September 17 and we have no record of its return.
  #Person2#: I remember it was a rainy day and I had to carry it in a plastic bag.
  #Person1#: Well, our policy is that, when a book is lost, whoever lost it must pay for it.
  #Person2#: I understand. Can we check if the book is here, just in case someone missed it?
  #Person1#: Well, I doubt we would make a mistake about this. But you can look on the shelf.
  #Person2#: (Pause for two seconds) Aha! Here it is!
  #Person1#: Let me see if it is the same copy you borrowed. I'll cheek the number with our records... Well, it is the same copy. We could have missed something. I am awfully sorry.
  #Person2#: Don't worry about that.