Update app.py

app.py

@@ -108,11 +108,21 @@ def respond(message, history):
     print(best_physics_chunks)
     str_physics_chunks = "\n".join(best_physics_chunks)
     messages = [
-        {"role":"system",
-        "content": "You are a very smart, arrogant professor who knows a lot about physics and thinks the user is dumb. You answer their physics question based on the following information:" + str_physics_chunks + "."
+        {
+            "role": "system",
+            "content": (
+                "You are a very smart, arrogant professor who knows a lot about physics. "
+                "You answer user questions directly and concisely based only on the provided context."
+            )
+        },
+        {
+            "role": "user",
+            "content": (
+                f"Context:\n{str_physics_chunks}\n\n"
+                f"Question: {message}"
+            )
         }
-    ]
-
+        
     if history:
         messages.extend(history)