Create a use case description for the following doctor's office system. When new patients are first examined, they fill out a patient information form that asks for their name, address, phone number, and brief medical history, which are stored in a patient information file. When a patient calls to set a new appointment or change an existing appointment, the receptionist checks the appointment file for available time. Once a suitable time is found for the patient, the appointment is scheduled. If the patient is a new patient, an incomplete entry is made in the patient file; Complete information will be collected when the patient arrives at the appointment. Because appointments are often scheduled in advance, the receptionist usually mails a reminder postcard to each patient two weeks before the appointment.