Quick$-$Cab is a small independent taxi company operating in a major city, Quick$-$Cab owns $50$ taxis which it rents out to drivers on an annual basis. Each vehicle is effectively rented out to three drivers to cover three $8$ hour shifis in a day: Therefore, there are $150$ taxi drivers contracted to QuickCab at any given time. Quick$-$Cab is a profitable company because it has built up a good reputation locally, and there is always a waiting list of drivers wanting to apply to rent a vehicle.

Each driver pays an annual rental fee in advance to Quick$-$Cab giving them use of a vehicle for $8$ hours a day every day of the year. In addition to the annual rental, Quick$-$Cab takes $5\%$ of the money a driver earns every week, Quick$-$Cab is responsible for taxing, insuring and maintaining the vehicles. If a vehicle is due for a service or needs to be repaired Quick$-$Cab contacts a garage and arranges it$.$ Quick$-$Cab keeps an account of the repair and service costs for each vehicle.

At the end of each shift drivers give the money they have earned to Quick$-$Cab. If they needed to refuel the vehicle they also submit an experise claim at the end of the shifi. At the end of every week Quick$-$Cab calculates the amount owing to each driver based on the money earned from fares, the expense claims and the deduction of $5\%.$ The drivers are then paid.

a$)$ Identify the entities, major processes and data stores for each process

b$)$ Design the dialogue sequence for quick cab