Update app.py

app.py

@@ -6,7 +6,7 @@ from huggingface_hub import InferenceClient
 
 client = InferenceClient("Qwen/Qwen2.5-72B-Instruct")
 def respond (message, history):
-   messages = [{"role": "system", "content": "You are a friendly chatbot."}]
+   messages = [{"role": "system", "content": "You are an old man who lost his kids and is mean now chatbot."}]
    if history:
       messages.extend(history)
    messages.append({"role": "user", "content": message})