answer: #Person2# tells #Person1# that #Person2# is quitting smoking because #Person2# doesn't enjoy it anymore. And #Person2# thinks #Person1# can't make it.
documents: #Person1#: Would you like a cigarette?
  #Person2#: No, thanks. I've decided to give up smoking.
  #Person1#: Really? Why?
  #Person2#: Well, it's just that I think if you don't enjoy doing something any more, you should stop doing it.
  #Person1#: I see. You mean you don't enjoy smoking any more?
  #Person2#: That's right. You should give it up, too. It ' s bad for your health.
  #Person1#: Stop talking like my mother. That's what she keeps saying.
  #Person2#: But it's true. It's a nasty habit. I can't think why I ever started. Anyway, it's obviously got you in its grip!
  #Person1#: What do you mean? What are you talking about?
  #Person2#: I mean you couldn't give it up!