- Shall we dance?
- Well, that's a charming idea.

3 seconds sound clip from the The Best Years of Our Lives (1946) movie soundboard.

You can hear this line at 00:40:26.970 in the Blu-ray version of the movie.

Quote context

[...]

- Take Pop for instance. He was cleaning his pipe like I've seen him do a million times. And all of a sudden he got conscious that he had hands and I didn't and he stopped cleaning his pipe and he tried to hide his hands like he was guilty or something.

- Give them time, kid. They'll catch on. You know, your folks will get used to you and you'll get used to them. Then everything will settle down nicely.

- Unless we have another war. Then none of us have to worry, because we'll all be blown to bits the first day.

- So cheer up, huh?

- Hey, Butch. You know Among My Souvenirs, huh?

- Shall we dance?

- Well, that's a charming idea.

- Do you remember this tune?

- Nice to see the young folks enjoying themselves, isn't it?

- So you're Al's daughter.

- Yes. I've been that as long as I can remember.

- You don't seem like Al's daughter.

- Actually, I'm not. He's my son by a previous marriage.

[...]