A：Sorry to have smoked in your room.对不起，在你的房间抽烟了。
B：Don’t worry. I’ll open the window.别担心。我会打开窗户的。
A：It’s very kind of you.你真是体贴。
B：Smoking is harmful for your health.吸烟有害健康。
A：I know. I’ll try to give it up.我知道。我会试着戒掉的。