Update app.py

app.py

@@ -224,7 +224,7 @@ class BasicAgent:
         
     def _ask_gpt4o(self, text: str) -> str:
         response = self.agent.chat(text)
-        return risposta = str(response)
+        return str(response)
         '''
         messages = [{"role": "user", "content": text}]
         response = self.client.chat.completions.create(