If I’m remembering right it was:

PILOT: Headset volume is unbelievably loud.
MECHANIC: Headset volume has been set to a more believable level.

A few more I remember from way back when:

PILOT: Mouse found in cockpit.
MECHANIC: Cat installed.

PILOT: Something loose in cockpit
Mechanic: Something tightened in cockpit

PILOT: Friction locks cause throttle to stick.
MECHANIC: Good, they’re supposed to.

(How did you get a new line without a blank line between them??? Formatting shouldn’t be this hard.)