I need help with that assignment

Student Name
Student ID        2
System Analysis – Online Club Booking System
Submitted By
Course
Professor
Date
Use Case Diagram
Use case diagram is the diagram that can be used to show the process of developing a system using an entity. It consists of actors and independent use cases. The actor is responsible to interact with the system. It can also be defined as the set of interactions between actors and the system. It shows the behavior of the system. The main function of using use case is that it is base point of designing any system by considering the perspective of the user. This is an innovative idea to communicate system behavior with the user (Dijkman, R. M. and Joosten, nd).
Use Case Description
    Use Case Name
    Customer Online Booking
    Trigger
    Customer makes online booking for the room
    Precondition
    User first register and then login into the system.
    Functional Requirements
    REQ-1: New user registers into the system.
REQ-2: Before making a booking, user login into the system.
REQ-3: He selects the date and time for which he wants to make booking.
REQ-4: He selects the room according to the requirement.
REQ-5: He makes online advance payment for the booking.
REQ-6: After successful payment, an email will be sent to the user for confirmation.
    Postcondition
    A room gets booked.
Domain Model
Domain model in software engineering is one of the most important UML...