Ilphyl tends to keep nocturnal hours, if local custom permits, but it also means they keep an eye out for other night owls to actually have some social interaction. So noticing that a human has been repeatedly hanging around the neighborhood for newcomers, looking at the stars, means a chance to at least say hello.

Neighbors are a novelty to a traveling adventurer. A bit intimidating, to be honest, since you can't just move on to the next town.

"Good evening. Nice weather we're having?"

Look at Ilphyl, trying to do small talk as if they read it in a book somewhere, or observed other people doing it, but haven't actually tried it themselves.