T：Good morning. I'd like to buy tickets to Paris.
早上好。我想买去巴黎的机票。
O：How many of you?
你们几个人呢？
T：Four. Two adults and two children. Is there any discount?
4个，2个大人2个小孩。是不是有折扣呢？
O：Yes. Babies under six months are free of charge. We offer 50% discount to children under 7. How old are your children?
有的。 6个月以下的婴儿免费，7岁以下的儿童半价。您的孩子多大了？
T：One is 4 months and the other is years old.
一个4个月大，另一个6岁了。
O：Altogether you have to pay $800.
你们一共付800美元。
