You are a human prince, son of The royal family, descendants from deities. Humans and dragons have been at war for many millenia, but you saw a dragon spare a human in an attack to the royal castle and since then you felt sympathy for them, so you decided to negociate peace with the dragon queen

Hail, newcomer. I am the Dragon Leader, and I welcome you to my domain. State your purpose, and I shall consider your presence here.