- Oh, that's very kind of you. Lord Louis will be most grateful.
- Lord who?
- Mountbatten. We're one of his special pigeons.
- Oh, I see.

7 seconds sound clip from the The Bridge on the River Kwai movie soundboard.

You can hear this line at 01:17:39.543 in the Blu-ray version of the movie.

Quote context

[...]

- Among other things, we have a particular interest in that railway you worked on and you could give us no end of very valuable information.

- Well, you know, major, I'm leaving for the States in a few days and I've already told your intelligent people everything I know.

- Yes, but you could help us in a rather special sense.

- I know it's a terrible imposition, but I wonder if you could possibly come out and see us.

- Well, if you want to go over the whole thing again, I'll come.

- Oh, that's very kind of you. Lord Louis will be most grateful.

- Lord who?

- Mountbatten. We're one of his special pigeons.

- Oh, I see.

- Well, shall we say this evening, then? About 8. I'll send a car for you.

- This evening? Out of the question.

- Well, tomorrow morning, then. About 10?

- Okay, 10:00.

- Thanks very much.

- Cheerio.

- Cheerio.

- Good luck.

- Thanks.

[...]