W: Excuse me, what did you say you would like to do, Mr. Green?
M: I said I'd better go back to the hotel. I'm meeting someone this evening.
W: OK, how are you going back? By bus or taxi?
M: I think I'd take a taxi. Did you know where I can get one?
W: Oh, just wait by the roadside, I'll wait with you.
M: OK, thanks. Are the taxis in London all black?
W: Well, some of them are. Is this your first time in London?
M: Yes, it is. Do you give extra money to the taxi drivers here?
W: You mean a tip? Oh, yes, They usually expect about ten percent.
M: That's the same in my country.
W: Oh, look, Here's one, Taxi.
M: Thanks. See you tomorrow.