For those interested in communicating with dragons .
Here is a temple/shrine dedicated to a dragon I visited in Japan.
The bell is to announce the presence of a human and summon it. You light a candle as an offering and give money ( like a Catholic Church to a saint).
Most shrines and temples in Japan put their request on a piece of wood that is written by the petitioner and then burnt by the priest.
There is always a ritual water cleansing if the hands and mouth in a water basin prior to all petitions.
Notice the altar set up .