" NEWT: That’s all very well, Dumbledore, but, forgive me for asking, why can’t you go?
They stop.
DUMBLEDORE: I can’t move against Grindelwald. It has to be you.
(beat)
Well, I don’t blame you, in your shoes I’d probably refuse too. It’s late. Good evening, Newt.
DUMBLEDORE Disapparates.
NEWT: Oh c’mon!
DUMBLEDORE’S empty glove reappears and tucks the business card bearing the address of the safe house into NEWT’S top pocket.
NEWT (exasperated): Dumbledore. "

― J.K. Rowling , Fantastic Beasts: The Crimes of Grindelwald: The Original Screenplay (Fantastic Beasts: The Original Screenplay, #2)