A good AI assistant does more than retrieve information—it knows which tool to use, how to verify the result, and how to reconcile policy with personal data.
This architectural blueprint shows how Decobot / Hala, our HR Leave & Attendance Assistant, combines:
LangChain ReAct for orchestration
LlamaIndex RAG for HR policy retrieval
SQLite FunctionTool for verified employee data
Reconciliation and safety checks for reliable answers
The key lesson: policy knowledge and personal facts should not be handled the same way.
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Mary Rose Delos Santos
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A good AI assistant does more than retrieve information—it knows which tool to use, how to verify the result, and how to reconcile policy with personal data.
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