Family of Three on Waitlist Gets Split Across Different Train Cars, Forcing Ticket Cancellation; How Can This Be Avoided and What Can Be Improved in the Booking System?

一家三口候补车票，8 岁小孩被分到不同车厢致无奈退票，怎样能避免这种情况？购票机制还有哪些优化空间？

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