oopsylon, as indicated [
ref] [
ref] they are about to run unless you do something to stop them. You are not in the middle of a conversation. :)
The obvious mechanic to get them to stick around and talk would be to
Persuade an NPC, but that Move requires that you have something to offer them, some leverage. If you can't think what you might offer them, then maybe a roll of
Figure Someone Out could provide a hint.
The way you go about Figuring Them Out and Persuading them (if you get the chance) will dictate what happens, including how hot they leave on a Miss. This might turn into a tense conversation on a Hit, or, on a Miss, it could become a chase (with them fleeing in haste) or a hunt (with them leaving quietly and your, possibly, following clandestinely to see where they go). We can try shape it how you, the player, prefer to have it go, but what you do in the fiction will be the determining factor; so far you are keeping it 'low-action' [
ref].