Complex sentence: Dylan has no money for the air fare but Jack suddenly re-energizes, organizing a garage sale which is boosted by George and his nursing-home lady-friends bringing home-made cakes to sell.
Split into simpler sentences: Dylan has no money for the air fare, but Jack suddenly re-energizes. He organizes a garage sale, which is boosted by George and his nursing-home lady-friends, who bring home-made cakes to sell.