graph TD; A[Import Carrier Invoice]:::user-action --> B(Audit Carrier Invoice Data):::system-action; B --> C[View Analysis of Carrier Invoice Data]:::user-action; C --> D(Recommend Optimizations):::system-action; D --> E[Take Action on Recommendations]:::user-action; classDef user-action fill:#f0f8ff,stroke:#333,stroke-width:2px; classDef system-action fill:#f5f5f5,stroke:#333,stroke-width:2px;