5. If there are no rooms available, please inform me as I must look for another hotel.
如果沒有空房，請盡快告知我以便另尋旅館。
還能這樣說：
Please tell me to book another room if there is no vacant room.
If the room is not available, remind me to book in another hotel.
應用解析：
make oneself available 使自己可以效勞；
available to 對……可獲得的；
make sth. available 使某事可利用
6. How long will you reserve the room?
你預定多長時間？
還能這樣說：
How long do you intend to book the room?
How many days will you book the room?
應用解析：
slip out of a room 溜出房間；
storm into sb.'s room 闖入某人的房間；
sweep out of the room 大模大樣地走出房間
7. What's the price of the single room?
單人房需要多少錢？
還能這樣說：
How much does it cost for the single room?
How much should I pay for the single room?
諺語：
Every man has his price.
每一個人都有其價碼。
8. What services come with the rate?
價格里包括哪些服務？
還能這樣說：
What services are included in the price?
What services does it involve?