[Roy understands the rivalry between officers working to move up. He's very well used to dealing with angry generals at home who were caught off guard with his own promotions since he was considered a little young for a Colonel. He allows Hux to bask in his own ego.]

I'd love one, since you're offering. [Roy makes a mental note of this. It would be rude not to return the favor sometime in the future.]

I've been trying to learn about the various worlds people were pulled from. Would you mind telling me about yours a little? [Of course, if Hux was interested, he would share a bit about Amestris. Nothing wrong with a bit of equivalent exchange.]