graph TD A[Start] --> B[Receive Input Variables] B --> C[Extract business_name] B --> D[Extract services list] B --> E[Extract service_area list] B --> F[Extract website_url] D --> G[Process Services] G --> G1[Split by comma] G1 --> G2[Trim whitespace] G2 --> G3[Convert to lowercase] G3 --> G4[Deduplicate] E --> H[Process Service Areas] H --> H1[Split by comma] H1 --> H2[Trim whitespace] H2 --> H3[Convert to lowercase] H3 --> H4[Deduplicate] F --> I[Process Website] I --> I1{Is URL blank?} I1 -->|Yes| I2[Set as null] I1 -->|No| I3[Keep URL] C --> J[Construct JSON] G4 --> J H4 --> J I2 --> J I3 --> J J --> K[Write to File] K --> L[Save as business_profile.json] L --> M[End]