In which film did Humphrey Bogart say "we'll always have Paris"?

His iconic line is spoken by Rick Blaine, played by Humphrey Bogart, in the dramatic final scene of Casablanca . At the end of Casablanca, Ilsa is about to get on a plane—and Rick isn't going with her. "What about us?" Ilsa asks, not wanting to board the plane without him. "We'll always have Paris," he says, meaning they'll always be together in their memories.