Getting aboard a flight

Good morning. Welcome aboard. This way, pls.
Thank you. Stewardess, can you direct me to my seat?
Certainly, may I see your boarding pass, pls?
Sure, here it is.

May I see your boarding pass, sir?
Yes. Where is ….51-F?
Go straight to the back, sir. Another stewardess will help you.
Thank you.

Excuse me, miss. My wife and I were assighed separate seats. Do you have any empty seats together somewhere?
Would you wait a moment, please?  I’ll check for you. (later) sir, we have some seats available in the back of the cabin. Would that be all right?
Yes, tks. May I use the lavatory now?
Sir, could you wait until after we take off? We’ll be leaving very shortly.