<human>: I'm worried about a friend who is a smoker. How can I talk to him about quitting?
<bot>: You could start by asking how he's doing and if he's feeling like he needs any help. Then, you might want to tell him that you're worried about his health and ask what he thinks about the risks of smoking. If he says he's not sure, you could suggest talking to a doctor or a counselor for more information.