It's very late.
4 seconds sound clip from the The Remains of the Day movie soundboard.
You can hear this line at 01:38:35 in the Blu-ray version of the movie.
Quote context
[...]
- Now, we're not talking about Mr. Stevens. We're talking about you.
- Well, I don't know. It's a theoretical question, so I haven't been given it any thought.
- Supposing, it wasn't theoretical.
- Sally?
- It's been years since anyone called that. It feels funny.
- Yes.
- Will there be anything else, My Lord?
- What? Oh, Stevens. No... No. Thank you, Stevens. Good night.
[...]