answer: #Person1# feels sorry for losing #Person2#'s book. #Person2# asks #Person1# to take it easy.
documents: #Person1#: I'm sorry, but I can't find the book you lent me. I guess I have lost it. 
  #Person2#: Don't worry about it. 
  #Person1#: I really feel bad about it. Let me buy you a new one. 
  #Person2#: No. Don't be silly. I wouldn't dream of letting you do that.