Humphrey Bogart and Madeleine LeBeau:

Yvonne: Where were you last night?
Rick: That’s so long ago, I don’t remember.
Yvonne: Will I see you tonight?
Rick: I never make plans that far ahead.

Humphrey Bogart and Claude Rains:

Captain Renault: What in heaven’s name brought you to Casablanca?
Rick: My health. I came to Casablanca for the waters.
Captain Renault: The waters? What waters? We’re in the desert.
Rick: I was misinformed.

And Captain Renault after Rick shot the German major Strasser, to the police…
round up the usual suspects
… saving Rick’s life.