Sequence diagram for airline reservation system

About this sequence diagram for the airline reservation system

The UML sequence diagram for the airline reservation system shows the sequence of interactions to book a flight. It starts from the search and ends with a payment confirmation or decline. The customer searches for the flights first. This request goes to the reservation system, where it is further sent to the airline system for fetching available flights. The airline system searches for available flights and then returns the list to the reservation system.

After choosing a flight and entering the details, the system checks seat availability with the airline's system. This check is made so that no further action is taken if the selected flight has no available seats. If the screen shows a flight has open seats, the customer can proceed to pay in the reservation system.

The payment step is an important stage that connects with the payment gateway. If a customer selects the pay option, the reservation system invokes the payment request via the payment gateway.

The payment gateway works. It returns a message. It says if the payment was successful or not. If the payment is valid, the payment gateway will send a message to the reservation system and book a flight with the airline system. Lastly, the airline's system processes the booking and sends a notification back to the reservation system.

If a user has a seat on hold for a time, and payment fails, the payment gateway will notify the reservation system of the failure. The reservation system sends an error message to the customer. It says the payment attempt failed and to try again. This shows how the airline reservation system can manage failed transactions without blocking users.

This UML sequence diagram for the airline reservation system is positioned to cover all key processes. These include searching for a flight, checking in, boarding, paying, and presenting the ticket. Each interaction across the customer, reservation, airline, and payment systems helps to avert errors and enhance service precision.

This keeps unhappy customers low due to reservation problems or payment failures. The sequence diagram shows an airline reservation system. It aims to please customers and avoid disappointment at every stage of the service.