问题描述：
A:will that be one way or round trip?and do you want to go first class or coach?B:one way trip,
A:will that be one way or round trip?and do you want to go first class or coach?
B:one way trip,please.uh,i prefer the first class.what about the fare?4106
A:will that be one way or round trip?and do you want to go first class or coach?
B:one way trip,please.uh,i prefer the first class.what about the fare?4106
问题解答：
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