送客人上机时候的英文怎么说啊

对日本人说英语，要用简单句子。

说 have a nice flight. see you next time 就行了。

如果要更热情点，可以这样说：

I am very happy to work with you here for these days. You are always welcome to be here again. I hope to see you next time. Have a nice flight. Bye!

日本人听不懂英语的~

说good bye~sayonara~i hope we can meet next time~

Wish you have a good trip!
I hope to see you again very soon.

looking forward to seeing you again soon,have a nice trip!

It is nice to see you in China!I hope you have good time during your stay here.Hope to see you next time.

Wish you a pleasant trip in the plane.E-mail me when you back to your country........