Dragon Rider by Cornelia Funke

In this novel by the best selling author of Inkheart and The thief lord, humans have driven the dragons out of their homes. A brave young dragon name Firedrake embarks on a journey to the Rim of heaven, a hidden sanctuary in the himalayas, whwere dragons can live in peace. Accompanied by ben, an orphan, and Sorrel, a witty young brownie, the three meet wonderful creatures on their way to the Himalayas. but still they have to face their biggest threat- the man made dragon Nettlebrand who seeks to destroy them all.