Lando: Lord Vader, what about Leia and the Wookiee?
Darth Vader: They must never again leave this city.
Lando: That was never a condition of our agreement, nor was giving Han to this bounty hunter!
Darth Vader: Perhaps you think you're being treated unfairly?
Darth Vader: Good. You know it would be unfortunate if I had to leave a garrison here.
Lando: This deal is getting worse all the time!
Lando expresses his disappointment with the way Vader is keeping his end of the bargain.