Sir, this isn't a firstclass ticket. I'm sorry.

这不是头等舱的机票 抱歉。

There are some firstclass seats available.

头等舱还有位置。

Look at that! They're going into the firstclass lounge.

你看 他们走进头等舱休息室了。

I'm sorry, all the firstclass seats are taken.

抱歉 头等舱客满了。