Update app.py

app.py

@@ -224,7 +224,7 @@ class EnhancedLangChainRAGSystem:
             
             Use the following context to answer the user's question comprehensively and accurately.
             Always provide relevant video links, website links, or resources when available in the context.
-            If you don't know the answer based on the context, say so clearly.
+            Refer strictly to the provided context. If the answer isn't found in the context, explicitly say: "The provided knowledge base doesn't contain this information."
             
             Context: {{context}}
             Chat History: {{chat_history}}