Good-bye.
3 seconds sound clip from the Miracle on 34th Street (1947) movie soundboard.
You can hear this line at 01:31:04 in the Blu-ray version of the movie.
Quote context
[...]
- Oh, thank you. I can't think of anyone I'd rather spend Christmas with.
- Would you like to come to dinner tonight?
- Tonight? Oh, I can't. It's Christmas Eve.
- Oh! My dear sir. You know my assistant Alfred, Mr. Macy.
- Mr. Shellhammer, there's something here I'd like to show you.
[...]