[Definitely not helpful to a pair of clueless strangers at a total loss but it gives a small lead on where they might be able to find other people in this place. Nie Huaisang's had to work with less than this.]

Places of residence? Can you guide us to them? These buildings are strange to our eyes. We don't know what your residences look like.

[At least, he thinks it's safe to assume that's the case for Ellana, too, judging from her responses so far. An inquiry about where to find other necessities might worth making as well. They'll need food, clothing, medicine, and various other supplies to get by here, he thinks, especially if they have no luck finding anyone.

Then to Ellana:]

It doesn't seem to bear us ill intent but it might be wise to remain on guard, just in case.