[Han's Ryl is rusty, and barely existent besides Han's cursing and some other phrases, but he knows what it sounds like when he hears it. He looks at Revan through the rear view mirror once more, clearly surprised.]

You're gonna have to tell me what that means, your Ryl's a lot better than mine. [If it is Ryl, and Han suspects it is.] You're, what, the second person I've met from my galaxy?

[Which raises his guard all the more, despite Han acting somewhat casual, because he's never heard of this Revan. He can only wonder if he's with the Rebellion or the Empire or, hell, a bounty hunter, and hope he won't link a friendly taxi driver with known rebel Han Solo right now.]