1.想换座位

　　YOU: Excuse me, would it be possible to switch/change seats with someone? My wife and I would like to sit together.

　　不好意思，我能不能和别人换一下座位呢？我想和我老婆坐在一起。

　　FLIGHT ATTENDANT: Certainly, sir. For now, please take your seat, and once the plane takes off, I'll help you with that.

　　没问题，先生。现在您先坐，等飞机起飞后我帮您换。

　　YOU: Thank you. Could you help me put this bag in the overhead compartment?

　　谢谢。能帮我把包放到行李架上吗？

　　FLIGHT ATTENDANT: Sure. There you go.

　　没问题，好了。

　　2.发现别人坐了你的位置

　　YOU: I'm sorry, I think you're in my seat.

　　不好意思，我想你是坐错位置了。

　　OTHER PASSENGER: Oh, let me check my boarding pass. Yes, I'm sorry, my mistake.

　　噢，我看看登机牌。是的，抱歉，我的错。

　　YOU: No problem. That happens.

　　没事，这挺正常。