- You'll have to press the button, Mr. Carpenter. 
- Oh, yes. Yes.
6 seconds sound clip from the The Day the Earth Stood Still (1954) classic radio play.
You can hear this line at 00:34:32 in the radio play.
Quote context
[...]
- I saw Bobby this morning before he went to school. I want to know what he told you.
- Oh, Bobby has such an active imagination.
- Did you believe what he told you?
- Really, this is where I work and I only have a short time for lunch today. If you'll excuse me...
- If you like. The service elevator's open.
- You'll have to press the button, Mr. Carpenter.
- All over the world, traffic stopped dead in a million streets.
[...]

 Dead of Night (1945)
 Dead of Night (1945)  Phantom of the Opera (1943)
 Phantom of the Opera (1943)  Scooby-Doo, Where Are You! (1969)
 Scooby-Doo, Where Are You! (1969)  Halloween III: Season of the Witch (1982)
 Halloween III: Season of the Witch (1982)  Knight Rider (1982)
 Knight Rider (1982)