The video doesn't have sound, but if it did, we would hopefully have heard this conversation:
Teller: "Next? OMG--you have a lightsaber! Oh, wait, that's just a gun. Lame."
Vader: "I find your lack of fear disturbing. Give me your money."
Teller: "I don't have much cash...I just put my drawer away for lunch."
Vader: "Perhaps I can find new ways to motivate you."
Teller: "Can you say 'Luke, I am your father'?"
Teller: "Why are you wearing camo pants? Only you could be so bold." (Vader looks down) "You know, you are unwise to lower your defenses."
(Vader looks back up,
thankful that the teller has instructed him on how to better pull off a
Vader: "The force is strong with this one."