What day do you plan to travel? 

您预计哪一天出发？哪一天回来？

I want to leave on June 20th and return on July 20th.

我想6月20号去，7月20号回来。

Do you prefer any airline?

您要搭乘哪一家航空公司呢？

This ticket is good for one month only.

机票一个月内有效。