2-- How much is a round-trip ticket to London?
 
1-- When did you plan to go, sir?
 
2-- In the second week of September.
 
1-- The second week of September is still in the high-season, so the cheapest tickets are' $650. The high season lasts until the 15th, so fares after that date are cheaper.
 
2-- In that case, I'll go after the 15th. How much are the off-season fares?
 
1-- Our cheapest ticket is $550 on American Airlines.
 
2-- Okay, I'll take it.
 
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注解：
 
1.round-trip ticket来回机票  
2.high-season旺季 
3.cheapest便宜的 

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译文：

1--公道旅行社，有什么需要帮忙呢？
2--到伦敦的来回机票多少钱？
1--您打算什么时候去呢，先生？
2--9月的第2个星期。
1--9月的第2个星期仍是旺季，所以最便宜的票是650元。旺季持续到15号，所以票价在这天之后比较便宜。
2--这样的话，我就15号后再去。那淡季的票价要多少钱呢？
1--我们最便宜的票是美国航空公司的550元。
2--好的，我就买这家的好了。