我预订了一张804班机的机票，我想把它改成明天上午的航班。你们明天上午有飞往西雅图的班机吗？

I have a reservation for flight No. 804. I want to change it to a morning flight tomorrow. Do you have any flights leaving for Seattle tomorrow morning?

youdao

我想取消我预订的去美国的航班机票。

I'd like to cancel my reservation to America.

youdao

我能取消我预订的去美国的航班机票吗？

Could I cancel my reservation to America, please?

youdao