Travel Agency
A travel agency arranges holidays for customers. Booking are make directly by customers. When a customer makes an approach, the reservations clerks selects appropriate flight details and hotel details from lists which are regularly updated. The details are entered onto a Provisional Booking file. The customer must confirm this booking within three days by sending a deposit of 10% of costs. On receipt of the deposit, Reservations transfer the details from the Provisional Bookings file to the Full Booking file. Four weeks before the flight is due, Accounts send an invoice to the customer for the remaining costs. Accounts notify Customer services when the full payment is received, and Customer Services then send tickets and joining instructions to the customer. Create a DFD for this scenario.