Update app.py

app.py

@@ -312,7 +312,7 @@ Guidelines:
     def _get_location(self, postcode):
         return "London" if postcode.startswith("L") else "Manchester" 
 
-    def _build_prompt(self, message, history):
+def _build_prompt(self, message, history):
     conversation = "\n".join([f"User: {user}\nAssistant: {bot}" for user, bot in history[-3:]])
     context = self.get_medical_context(message)