What is the fine-grained topic of the following text: On 6 April, the Riyadh-based airline started long-haul flights with A330s wet-leased from Portuguese operator HiFly on 6 April, said commercial strategy director Clayton Ulisses Begido at the Routes Europe summit in Marseille. Only return the topic.
Riyadh-based airline starting long-haul flights with leased A330s from HiFly