After successful login, the user searches for items. If the desired item is not available, the user is immediately notified and directed to continue their search. Once an item is found, the user can select one or more quantities of that item, with both paths converging at the intersection leading to the exit. After the order is confirmed, the user selects a payment method and completes the purchase. However, if the user chooses to cancel the order during checkout, the transaction is cancelled.
