安排假期的客户端代码可能需要调用服务来安排航班、酒店、出租车。
Client code setting up a vacation may need to call services to set up flights, hotels, rental cars.
直到我们从酒店的系统中收到回复，获得确认代码之后，我们才向客户确认订单。
We never confirm a guest booking until we receive a response from the hotel's system with a confirmation number.
如果你的酒店管理系统允许的话，你可以为上门客的销售单独设定一个代码。
If your property management system allows, assign a special source code to walk-ins.
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