(15 pts) Consider a Rail Company that maintains a schedule of all its connections. Passengers access the system via some portal in order to book a ticket for a connection. Consider the following partial domain model of the system. (a) Complete the domain model to capture all requirements and (b) produce a design for operation book (passenger, date, source, destination), where the triplet date- source-destination describes a unique record in the company's schedule. (c) Describe the deployment of any and all Responsibility Patterns in your design. Passenger 1 Portal TicketCatalog Schedule