A: Could you give me a cigarette?
B: I'm afraid you can't smoke on the plane.
A: Really?
B: You can ask the airline stewardess.
A: Excuse me, can I smoke here?
C: Sorry. All international flights are non-smoking. And please fasten the safety belt.
A: OK. Will this flight get there on time?
C: No. We'll arrive an hour later.
A: Can I use my computer now?
C: Yes, you can.
A: What about my phone?
C: You must keep it off.
A: OK. That's it. Thank you for your help.
C: It's my pleasure.