"Right. OK. This is the arctic. Like, I don't know if you've..."
She pauses, trying to think of a way that three people could have "just gotten" to the middle of a frozen wasteland with no vehicles. She can't really come up with anything. Maybe they mean it in the relative sense, like they're campers and they're not from around here. Yes. Campers. Without a tent or a vehicle.
Clearly, they have no idea what they're doing.
"Uh, I don't know if you know where you are? But this is not a safe place. Like, there's the cold, and there are bears--they told me there were bears--and, um--the point is, you can't stay out in the middle of nowhere, because soon it'll be night, and then the temperature will drop, and then you guys will freeze and die and maybe be eaten by wolves. And then there will be dead bodies on my delivery route! And that's not OK. So let's just, like, go back to town, and explain things, and then nobody will be dead, and my customers will be only slightly annoyed that they had to wait another four hours to get their stuff."