With airlines scaling back flights in and out of China, some travellers are stuck inside or outside the country. The wealthy ones are turning to private jet operators to ask them to arrange flights, despite the huge costs. But the companies are having to turn them away due to travel bans and a lack of available planes and crews. Australia-based Darin Voyles, of Paramount Business Jets, said the firm had seen a ''considerable uptick'' in requests, but the majority can't be filled as they can't get the crew or planes.

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