Luke: "You got a lot of carbon scoring here. Looks like you boys have seen a lot of action."
C-3PO: "With all we've been through, sometimes I'm amazed we're in as good condition as we are, what with the rebellion and all."
Luke: "You know of the rebellion against the Empire?!"
C-3PO: "That's how we came to be in your service if you take my meaning, sir."
Luke: "Have you been in many battles?"
C-3PO: "Several, I think."
Luke: "Actually, there's not much to tell. I'm not much more than an interpreter and not very good at telling stories. Well, not at making them interesting, anyway."