Educate your customers to avail appointment system. This helps organizations to predict the number of expected customers on a particular day and in most of the cases the kind of service each customer wishes to avail. For example, hospitals who have popularized appointment based patient consultation would know the number of patients who might visit on a particular day and the doctor which they wish to consult or the service which they wish to avail. Online appointment software has been used increasingly by service organization where by customers can book the appointment from the website of the service organization. Mobile Apps provided by the service organizations are being used increasingly by their customers to book appointment directly from their mobile devices.