It would be almost cute the way this dragon was acting, if he wasn't towering over Rez and Rez in no position to defend himself. "Ah, yes. Food. Um... We eat small animals, some types of roots are nutritious, berries though I'm not sure if I'd recognize edible versus poisonous in this area..." He trailed off, drumming his fingertips on his head.
Wait. You will allow me to leave these woods at last. Shoot that sounded ominous. Rez had no idea how powerful this creature was compared to anything else he'd find here... What if he was some like god that was banished here? Would setting him free put this world in danger? He thought for a moment... And eventually settled on that was not his problem. He wasn't from here, they imprisoned this dude once apparently. If it needed to happen again, surely they'd figure it out.
For now, he resolved to just get himself to safety. He'd worry about potential consequences of his actions later.