The weight of the true realization that he will never see her again finally crushes JOHN and makes him rethink his entire life in one quick moment. For once really understanding how much he actually loves and needs her, JOHN starts to panic, frantically banging on the elevator buttons, trying to pry doors open, etc but the launch mechanism has been activated already. It is too late. What he thought he wanted all his life suddenly doesn't appear so fulfilling anymore.
TWO-SHOT: FROM OUTSIDE
We see elevator starting to move.
(Cinematic orchestral music starts playing in background)
MEDIUM CLOSE UP: FROM INSIDE
I will write you. Every day! I promise.
MEDIUM: SHOWING LISA
She's sobbing by now. In tears. Crumbling. Devastated.
Don't... go... .
She's almost whispering it. Pleading. They both know it's too late.
WIDE: CAMERA PANS UP
Elevator is speeding into space.
FLY BY: CAMERA MOVING ALONGSIDE SPACE ELEVATOR
CRASH ZOOM OUT