A Use Case Diagram for a cruise online booking system is a visual representation of the different interactions between users and the system to achieve specific goals. The main actors in the system include the customer, the travel agent, and the system administrator. The diagram shows the various use cases, such as searching for cruises, selecting a cruise, making a booking, and canceling a booking. Other features like payment processing, customer support, and itinerary management are also included. The diagram helps to identify the different user interactions and their dependencies, ensuring that the system meets the needs of its users while fulfilling its objectives. By understanding the use cases and how they are related, the developers can create a more efficient and effective booking system that provides a seamless experience for its users. Use EdrawMax to create a similar diagram for your projects. EdrawMax offers a wide range of similar templates that helps beginners and professionals in creating great-looking diagrams.