update chat utils

rag_app/chat_utils.py

@@ -40,12 +40,13 @@ def respond_to_chat(query: str, history: list[ChatMessage]):
     assistant_message = ChatMessage(role=_ROLE_ASSISTANT)
     yield assistant_message
     state = me.state(State)
-    pdf_files = state.pdf_files
-    if pdf_files:
-        response = extract_final_answer(pdf_files, query)
+    if len(state.pdf_files)==0:
+        pdf_files = ["data/annual-report-of-fy-2022-23.pdf", "data/reliance-jio-infocomm-limited-annual-report-fy-2023-24.pdf"]
     else:
-        response = answer_question(query)
-            
+        pdf_files = state.pdf_files
+    
+    response = extract_final_answer(pdf_files, query)
+    
     print("Agent response=", response)
     yield response