Complex sentence: Wamos Air, formerly "Pullmantur Air", is a Spanish charter airline headquarteted in Madrid, that operates charter flights mostly on behalf of Pullmantur Cruises from its main base at Madrid Barajas International Airport.
Split into simpler sentences: Wamos Air, formerly "Pullmantur Air", is a Spanish charter airline headquartered in Madrid. It operates charter flights, mostly on behalf of Pullmantur Cruises from its main base at Madrid Barajas International Airport.