Taxi fares vary¹ from city to city. In some cities, taxis have meters
            that tell you the fare. For long rides, it is a good idea to ask in
            advance what the approximate² fare will be. This is especially true
            if you're taking a taxi from an airport. You should tip taxi drivers
            about 15% of the total fare.

            1.A: Kennedy Airport, please. I have to be there by 7:00.
            B: I can't promise anything, but I'll do my best.
            B: OK. That'll be $12.00, please.
            A: Thanks a lot. Here.

            2.A: Do you think you can get me to Union station by quarter after?
            B: We shoudn't have any trouble if the traffic isn't too heavy.
            B: You've got plenty of time. That's $7.65, please.
            A: Thank you very much. Here's $10.00. Give me $1.00 back, please.

            3.A: The Hilton Hotel, please. I have a 10.30 appointment.
            B: You'll be there in plenty of time.
            B: Here we are. $8.50, please.
            A: Thank you. Here's $10.00. keep the change.

            4.A: Grand³ Central Station, please. I want to try to catch a 6:00
            train.
            B: I think you'll make it if we don't get stuck in a traffic jam.
            B: This is it. That's $9.15, please.
            A: Here