We did not remove the actual availability verification done before saving a request, so users will be told if the room is actually available (or not) before their request is saved.
我们并未删除在保存请求之前完成的实际可用性校验，因此在用户保存请求之前，将会得到此房间是否确实可用的消息。
This transition represents a case when a room of the specified type is not available.
这个迁移表示当指定类型的房间不可入住时的情况。
You get the same EnterRoomInformation form again, because a double room is not available for booking in the sample data.
您再一次得到相同的EnterRoomInformation表单，因为在样例数据中没有双人间可以预订。
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