So, MC was watching the dragon's nest from her window. At night. While the nest was in a forest. Which wasn't exactly near the town. Cheat receptionist indeed.
@sherlock0790 - the thief duo were offered freedom after they completed this dangerous mission. They chose to use their freedom to keep their current job. At least, that's the way I read it.
@Chizan - in Japanese works, "wind dragons" or "flying dragons" have 50% chance of being wyverns. I guess it's the way they translated wyverns in some famous work.