Oh, well, thanks. That's mighty good news. Yes.

6 seconds sound clip from the Miracle on 34th Street (1947) movie soundboard.

You can hear this line at 00:29:38 in the Blu-ray version of the movie.

Quote context

[...]

- Now, until we get his report, we won't say a word.

- I'll get in touch with him right away.

- Yeah, but first, get that Santa Claus back.

- The examination won't be worth a thing without the patient.

- It was just because I felt that we owed it to him, but Mr. Macy suggested that we find something else for the other Santa Claus and keep you on, by all means.

- Oh, well, thanks. That's mighty good news. Yes.

- You'll be here in the morning then?

- Certainly, I will. You see, this is quite an opportunity for me.

- For the past 50 years or so, I've been getting more and more worried about Christmas.

- It seems we're all so busy trying to beat the other fellow in making things go faster and look shinier and cost less that Christmas and I are sort of getting lost in the shuffle.

[...]