"Ahh..that's good to know." At least he will know what to do if he ever gets his own wings dirty. He wishes he could help since it's his fault that this happened but he sits there rather obediently while she does it herself.

"Are you an angel?" Since those are the only creatures with wings he knows about he figured everyone with wings much be angels. It would mean that Aziraphale is no longer alone at the hotel which is kind of exciting.