- Do you know his number?
- No, I don't know his number.
- I'll look it up for you.

4 seconds sound clip from the The Third Man (1949) movie soundboard.

You can hear this line at 00:49:32.710 in the Blu-ray version of the movie.

Quote context

[...]

- Sneak out the other way and go back to your theatre. I'd better not see you again.

- What are you going to do?

- I wish I knew.

- Be sensible. Tell Major Calloway.

(OLD CAR HORN HONKING)

- Get me Major Callaghan on the phone. It's very urgent. Just get him on the telephone.

- Do you know his number?

- No, I don't know his number.

- I'll look it up for you.

- Is there a car here I can use?

- Of course. There's one waiting for you.

- Never mind about the number.

- Take me to the headquarters...

- Hold on! Hold on! I haven't even told you where to take me yet! Driver! Driver! Slow down!

[...]