What oral English should I prepare for an international flight to Britain?

Where is the boarding gate of xx?

Where is the transfer service?

Excuse me, may I have a window/seat?

This is my boarding pass/passport.

Where is Bagh's rendezvous?

I want to announce that I got ... with me.

Where is the flight?

Where is the transfer service?

This is my passport.

Where is my luggage?

I want to declare that I have. . . . . .

I continued to translate according to the first floor.