Ticket Change
* Class Y: Any change is subject to the availability of the same class, upgrading subject to payment of fare difference.
* Class B-V: Any change is subject to the availability of the same class, free for the first change and 10% surcharge for the second change, upgrading subject to payment of fare difference
Class W: Any change is subject to the availability of the same class, free for the first change and 20% surcharge for the second change, upgrading subject to payment of fare difference
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