A: I need a cab to the theater district. B: We can get that for you right away. A: Well, I don't need to be there for another hour. B: Would you like to reserve a limo then? A: That seems a bit much for me. Just a regular cab is fine. B: We can't reserve a taxi that far in advance, sir. A: So how do I get a cab in an hour then? B: If you go right outside our lobby when you are ready, a staff member will hail one for you. A: Do I have to tip the guy who gets the cab for me? B: Tips aren't mandatory, but they are appreciated. A: Maybe I'll just hail the cab myself then. B: That's also an option.