Reference no: EM133238964

Case: ABC Coaches is a coach company based in Harare. They specialize in organizing day trips to various destinations in Zimbabwe. Customers of ABC Coaches include institutions such as schools and companies. They hire coaches with drivers for trips which are organized and arranged especially for them. The manager of ABC coaches is responsible for allocation of coaches and drivers to the trips. Trip records are created when trips are arranged. If a customer (for whom a trip is being arranged) is new, then the customer's details are recorded. Otherwise, the customer's record is updated. Customers will typically request that a day trip be organized for them on a specific day. The number of coaches allocated to a trip depends on the number of seats required. In response to this request, ABC will check to see if the required coaches can be made available on that date. If the coach is available ABC will allocate one or more drivers and create a trip record for the customer. Customers are allowed to cancel a trip before deposit is paid. The deposit should be paid within 7 days of booking for the trip to be taken. If a trip is cancelled after that, the deposit is kept at ABC Coaches. If a trip is cancelled, the trip record will record this. ABC will request a full payment for a trip in the week before it takes place. A cancelled trip deleted from the system 6 months after cancellation. Other trip records are deleted 12 months after corresponding trips were completed.

Question: Using the information from the case study, come up with a logical top level DFD for a booking system for the ABC coach system