Question

请懂英文的朋友帮助我翻译以下内容，急用，谢谢！请不要用翻译器

情况有变，因我的上司出差还没回来，我须等他回来交代好工作后方可出国，所以需要将机票改签至本月20日，不知可否？请你回复。
非常抱歉，请谅解。

Answer 1

不需要完全逐字照翻，意思达到并符合习惯就可。
请参考我的答案
Something happens here.这句也可以不要

My boss is on a business trip and not coming back yet.
I have to wait here until his back for some issues about working.
Would you please kindly change my ticket to 20th this month?
I am eagerly waiting for your reply. Many thanks

非常抱歉这句没要

Answer 2

I‘m afraid I have to tell you that my flight must be rescheduled to 20th this mouth,since my superviser is out for business and I couldn't go abroad until he's back.I fell awful and I want to know if you are ok with that.
Sorry again and your understanding and instant reply will be sincerely respected.

比较口语化了点，希望能帮到你。

Answer 3

Something unexpected happened, because my boss on business hasn't come
back, I must wait for him and make arrangement for his work and then I can go abroad,
so I need to endorse the ticket to 20th of this month, may I? looking forward to your reply.
I'm seriously sorry, please understand.