Ok, im not posotive but the science says yes because there both dragons and both are in dragon egg group. Dragonite hase water 1 and dragon egg group, and Charizard has monster and dragon egg group. So looking at your question scientificly, yes you can Charizard and Dragonite.
One thing is I havent tried it my self and im not exactly positive its going to work. But you sould try it befor giving up.
I hope this helped a little bit.