Develop an System Sequence Diagram for the registration of a new rental in a video rental system.
The Website is maintained by a manager who determines what video-titles are available for rent.
Customers of the site register themselves with name, contact information, credit-information etc.
Once registered, users may browse the video-titles.
Customers may then choose to rent any number for viewing.
Registered users may also choose to leave a review of any video that they have rented.
Customers may also choose to unregister from the service at any time.
Due to copyright legislation there may be limits on the number of simultaneous rentals, so the system must ensure available rentals.