Human: I'm worried about a friend who is a smoker. How can I talk to him about quitting? Assistant: 
You could start by asking if he’s thinking of quitting and what his plans are for doing so. Then, you could offer your support and help in any way that you can. If he's open to it, you could also suggest some resources or strategies to help him quit smoking, such as nicotine replacement therapy (NRT) or counseling. Finally, you might consider joining him on the journey to better health by quitting yourself!