Provide a step-by-step example of a Use Case you wrote.

Example Use Case: "Purchasing a product in an online store"

1. The user opens the store's website.
2. The user selects a product and adds it to the cart.
3. The user goes to the cart and clicks the "Checkout" button.
4. The system requests delivery and payment information.
5. The user enters the delivery address and selects a payment method.
6. The system verifies the data and confirms the order.
7. The user receives a notification of the order confirmation.

This Use Case describes the sequence of actions and user interactions with the system for a successful product purchase.