answer: #Person2# has given up smoking and advises #Person1# to give it up too. #Person1# has tried but it's no use.
documents: #Person1#: Do you want a cigarette?
  #Person2#: No, thank you. I've given up, you know.
  #Person1#: You don't mind if I have one.
  #Person2#: Well, all tight. But you know, smoking does do harm to your health.
  #Person1#: Yes, you are right.
  #Person2#: Why don't you try and give it up?
  #Person1#: I've tried to give up smoking several times, but it's no use.