二等票的价格是一等票的一半.

The price of a second - class ticket is half that of a first class.

买一张去温撤斯特单程二等票.

One single , second class , to Winchester, please.

请给我一张去芝加哥的单程二等票好吗？

Can I have a second-class one way ticket to Chicago,please？

请给我一张去芝加哥的单程二等票好吗？

Can I have a second-class one way ticket to Chicago,please?