A：Excuse me,sir.You are not supposed to smoke here.对不起，先生，你不能在这里吸烟。
B：I beg your pardon?请你再说一遍好吗?
A：Your seat is in the non-smoking section.So,please refrain from smoking.你坐的位置是非吸烟区，所以是禁止吸烟的。
B：Oh,I see.Since I'm a heavy smoker,may I change my seat?啊，我知道了，因为我是个老烟民，我可以换座位吗?
A：Then,I'll try to find a seat in the smoking section.One moment,please. Thank you for waiting.I found a seat in the smoking section for you.那么，我想办法在吸烟区找个座位，请等一会儿。谢谢你等候，我在吸烟区为你找到了一个座位。
B：Oh,did you?Thanks a lot.啊，是吗?多谢你.