Keep the Change

Jimmy is at the Boston Airport. He hails a taxi.
(T=taxi driver; J=Jimmy)
T : Where to, buddy?
J : The Sheraton Hotel, please.
T : OK. Is this your first time in Boston?
J : Yes. What's a good place for sightseeing?
T : If you have a lot of time on your hands, you can walk the Freedom Trail.
J : I'm kind of strapped for time.
T : In that case, whatever else you do, you must check out the observatory on the 63rd floor of the John Hancock Building.
J : Isn't the building all glass?
T : That's right. You can't miss it. Here's your hotel. That'll be $17.50, please.
J : Here's $20.00. Keep the change.

吉米现在正在波土顿机场。他叫了一部出租车。
司机:去哪里, 老兄?
吉米:麻烦到希尔顿饭店。
司机:好的。你是第一次来波士顿吗?
吉米:对。有什么好地方值得观光的吗?
司机:如果你时间充裕的话, 你可以走一趟自由之路。
吉米:我的时间有点紧凑。
司机:那样的话, 不管你做什么其它的事, 你一定要到约翰汉克大楼第六十三层的天文台看看。
吉米:不就是那栋全部玻璃帷幕的大楼吗?
司机:没错, 你一定会找到的。饭店到了, 车费总共是十七元五角。
吉米:这是二十块, 不用找了。