"Wow! That sounds like fun - kind of like travelling parties... except they're normally on the same quest. Or similar ones - like, sometimes trainers and co-ordinators travel together!"
Iris. You should explain concepts before you just toss them around.

Oh, whatever, you're not stopping.
"Yeah - people and Pokemon are close and that's great! They'd never attack people - unless that person was trying to hurt them, of course! Pokemon aren't defenseless - I'm sure you can feel that! And I'd be sad if cities didn't allow Pokemon in - they're my closest friends."