Draw the Data Flow Diagram Hotel reservation system allows customers to search for rooms online by entering a date range. The search result will show the room type, price, and availability. Customers can book rooms online. Customers can cancel reservations online. Customers will receive the confirmation on room reservations or cancelations. Customers can create and update accounts which include the contact information such as name, mailing address, email address, and telephone number. Hotel staff can create and update accounts for customers. Hotel staff update customers check-in and check-out status