补充情景对话：
A: I’d like to book a flight to Beijing for Thursday the 25th.
我要订一张25号星期四去北京的飞机票。
B: I’ll have a look in the time-table for you.
我就替你查一下时刻表。
A: I’ll need an economy class open return.
我要一张经济舱的不限时间的来回票
B: China Eastern Airline Flight MU5145 takes off at 12:10.
中国东方航空公司MU5145 班机12:10起飞。
替换练习：
1．I want to fly to Hong Kong on October 30th.
我要在10月30日飞往香港。
Beijing北京 October25th
Guangzhou广州 November 15th
Xi’an西安 December 2nd
2．I want to go economy.
我想要经济舱的票。
a first-class ticket
头等舱票