A: Excuse me. Where is my seat? 打扰一下,请问我的座位在哪儿? B: May I see your boarding pass, sir? 先生,我可以看看你的登机证吗? A: Yes, where is 51-F? 好的。哪里是51-F? B: Go straight to the back, sir. 直走到后面,先生。