- Well, thank you for everything.
- You're quite welcome.

4 seconds sound clip from the Back to the Future Part III movie soundboard.

You can hear this line at 00:45:10.425 in the DVD version of the movie.

Quote context

[...]

- Ma'am, good luck with your school teaching and everything.

- Clara, I'll straighten everything out with Mr. Statler for the buckboard rental. Don't worry about that.

- I feel somewhat responsible for what happened.

- Oh. That would be very gentlemanly of you, Mr. Brown. Emmett.

- You know, I'm almost glad that snake spooked those horses. Otherwise, we might never have met. I suppose it was destiny.

- Well, thank you for everything.

- You're quite welcome.

- I will see you again, won't I?

- Of course. You'll see lots of me. I'm sure. I have a shop in town. I'm the local scientist, blacksmith.

- Science? What sort of science? Astronomy? Chemistry?

- Actually, I'm a student of all sciences.

- Hey, Doc, we got to get going.

- Oh, yes. Well, excuse us, Clara. We have to get going.

[...]