Why do you always get calls from the business hotel in the airport building?

I always get calls from airport hotels to remind customers. When staying at the Airport House Business Hotel, after the room expires, the front desk will call the landline of the customer's room to remind the customer that the time is up, and the customer will decide whether to extend the stay, and then the hotel service staff will decide whether to clean the room. A business hotel is a hotel that focuses on business guests rather than tourists.