We're booked for the holidays.

4 seconds sound clip from the White Christmas (1954) movie soundboard.

You can hear this line at 00:26:39 in the Blu-ray version of the movie.

Quote context

[...]

- Hey, if this keeps up, we'll practically be in-laws before the dance is over.

- Well, I don't mind, if you don't.

- Yeah, it's too bad we're leaving town tonight.

- That is a shame, but we're leaving tomorrow, anyway.

- Where are you going? Vermont.

- We're booked for the holidays.

- Vermont, huh?

- Vermont should be beautiful this time of the year, with all that snow.

- Yeah... You know something?

- What?

- Vermont should be beautiful this time of year. All that snow.

- That's what I just said.

- We seem to be getting a little mixed up.

- Maybe it's the music.

- Maybe it isn't only the music.

[...]