[He laughs once, softly at being named "Technician."]

I promise to be good, officer.

[It isn't likely a promise he'll be able to keep, not with the dirty politics of the alternate Gallifrey being what they are. But it serves as a reminder to at least try.]

Good bye, Agent K. And good luck in your endeavours to protect your planet from harm.

[For a brief moment he wishes he could take Kay with him. He needs someone whom he trusts, just as Romana has Leela. But it's an impractical fantasy.

So he simply bows in Gallifreyan fashion.]