Castle in the Air (Howl's Moving Castle Series #2)

Abdullah was a young and not very prosperous carpet dealer. His father, who had been disappointed in him, had left him only enough money to open a modest booth in the Bazaar. When he was not selling carpets, Abdullah spent his time daydreaming. In his dreams he was not the son of his father, but the long-lost son of a prince. There was also a princess who had been betrothed to him at birth. He was content with his life and his daydreams until, one day, a stranger sold him a magic carpet.