answer: Mrs. Smith wants to buy some books for her mom. #Person1# recommends Mrs. Smith a detective book and she wants more.
documents: #Person1#: Good morning. Mrs.Smith.
  #Person2#: Good morning! Can you help me, please? I'm looking for some books for my mother.
  #Person1#: Well, what kind of books does she like?
  #Person2#: She's very fond of detective stories?
  #Person1#: I see. Has she read any detective stories?
  #Person2#: Oh, yes!
  #Person1#: Do you know if she's read this one?
  #Person2#: I'm not sure, but she probably won't remember if she has! She's very forgetful!
  #Person1#: Ah! She has a bad memory. How old is she?
  #Person2#: She's eighty-seven.
  #Person1#: I suggest you take this book.It ' s very exciting.
  #Person2#: Thank you.That' s a good idea.she likes exciting books. Can you suggest another one?