1.问对方空中旅行还好吗

Did you have a good flight?

2.请对方别拘束

Make yourself at home.

3.我通常看电影,上上网

I often watch films and surf the Internet.

4.上海越来越国际化了

Shanghai is getting more and more international.

5.感谢对方的帮助

Thank you for your help.(后面还可加It's very kind of you.你真是太好了)