graph LR
    participant User as "User"
    participant API as "Query Service API"
    participant RetrievalHandler as "Retrieval Handler"
    participant EmbeddingGenerator as "Embedding Generator"
    participant ChromaDB as "ChromaDB (Vector Store)"
    participant LLMIntegrator as "LLM Integrator"

    User->>API: Sends query request
    API->>RetrievalHandler: Retrieve relevant documents
    RetrievalHandler->>EmbeddingGenerator: Generate embeddings for query
    EmbeddingGenerator->>ChromaDB: Query vector store
    ChromaDB->>RetrievalHandler: Return relevant documents
    RetrievalHandler->>LLMIntegrator: Generate response using LLM
    LLMIntegrator->>API: Return final response
    API->>User: Return final response