Update app.py

app.py

@@ -46,10 +46,10 @@ def respond(message, history):
     context = "\n\n".join(top_chunks)
     messages = [{"role": "system", "content": f"You are a travel advisor. Cover flights, hotels, food, and itineraries. If the user is just greeting you, greet them back and ask where they want to travel. \n{context}"}]
     for turn in history:
-        if turn[0] is not None:
-            messages.append({"role": "user", "content": turn[0]})
-        if turn[1] is not None:
-            messages.append({"role": "assistant", "content": turn[1]})
+        if turn["role"] == "user":
+            messages.append({"role": "user", "content": turn["content"]})
+        elif turn["role"] == "assistant":
+            messages.append({"role": "assistant", "content": turn["content"]})
     messages.append({"role": "user", "content": message})
 
     response = ""