[That makes sense, otherwise he'd probably be wondering about why nobody from Earth had managed to find anything sentient within their own galaxy in his...universe, or however he's supposed to think about all this. The life he knows of in space is well further out than that.]

So what would I call someone from your planet, then? I don't want to be rude about that when there's so many people from different places here.

[And it's always interesting to learn that sort of thing, too. After a brief pause, he brightens a little like he just remembered something.]

Oh, and I should probably ask for your name, too...