No, the dragons of my world are not like people. They are more like intelligent beasts than anything else. They will put up some resistance to commands when they feel like though, and there is a point in their life time where they will not be able to hear those commands anymore.

Also, the Dragoon Spirits could take hold of a person if they do not have a strong enough will. So, it becomes the person either able to command dragons or the person being controlled by a spirit.