The guard replies that the morning rush is already past. None of those Adventurers were the kind to stick around on the first floor. They may get some Adventurers passing them on the way back up, especially if somebody gets unexpectedly wounded or hits on an unexpectedly large haul.
The other guard sternly notifies the two that they are not allowed to kill other Adventurers and loot them. Relis isn't that kind of town.