How to sell available rooms when the hotel is full?

Generally, when booking a room, we can make a reservation according to 125% of the number of rooms, especially in the peak season, which often leads to overbooking: 1. Ask the guests to pay a deposit, and if they don't arrive, they can make up for the loss of the hotel. You can't stay too late, so you can sell the house for the second time even if the guests don't arrive. 2, be sure to reserve the guest phone, keep abreast of changes, the front desk staff should have the ability to adjust the guest reservation at any time. Even if the reservation is full, you can take the initiative to ask the guests who call later, so that once a guest fails to arrive, you can get in touch with new guests.