System Design

Construct a system modelling for the case study below:

Hello Holidays Management System

Hello Holidays is a travel company based in Malaysia. They specialize in organising day trips to various destinations in several cities. Customers of Hello Holidays include individuals, institutions such as schools, nursing homes, etc. They hire coaches with drivers for trips that are organized and arranged, especially for them. The manager of Hello Holidays is responsible for the allocation of coaches and drivers for 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 date. The number of coaches allocated to a trip depends on the number of seats required. In response to this request, the Hello Holidays manager will check to see if the required coaches can be made available on that date. If the coaches are available, the manager will allocate one or more drivers and create a trip record for the customer. Customers are allowed to cancel a trip before a deposit is paid. The deposit should be paid within $7$ days of the booking for the trip being made. If a trip is canceled after that, the deposit is kept by Hello Holidays. If a trip is canceled the trip record will record this. Hello Holidays will request full payment for a trip in the week before it takes place. The manager should be able to generate exclusive reports about the profits, operations, and expenses statuses at any time.