They're responding.
3 seconds sound clip from the Mars Attacks! (1996) movie soundboard.
You can hear this line at 00:51:10 in the Blu-ray version of the movie.
Quote context
[...]
- Yeah, but there's something I want to say to you.
- Just because I feel like saying it, all right?
- I love you. I love you too, Byron.
- Now stop wasting money. I'll see you tomorrow.
- A message from the Martians.
- Really?
- They've issued a formal apology.
- Didn't I tell you this would happen?
[...]