Activity Diagram

flowchart TD
    Start([Start]) --> A[Receive Order]
    A --> B{In stock?}
    B -- yes --> C[Reserve Inventory]
    B -- no --> D[Backorder]
    C --> E[Charge Card]
    D --> F[Notify Customer]
    E --> G{Charge OK?}
    G -- yes --> H[Ship Package]
    G -- no --> I[Cancel Order]
    H --> End([Done])
    I --> End
    F --> End