Update app.py

app.py

@@ -69,7 +69,7 @@ demo = gr.ChatInterface(
     respond,
     additional_inputs=[
         gr.Radio(choices=options, label="Model:", value=options[0]),
-        gr.Textbox(value="", label="System message"),
+        gr.Textbox(value="You are a helpful and harmless assistant. You should think step-by-step. First, reason (the user does not see your reasoning), then give your final answer.", label="System message"),
         gr.Slider(minimum=1, maximum=2048, value=512, step=1, label="Max new tokens"),
         gr.Slider(minimum=0.0, maximum=2.0, value=0.3, step=0.1, label="Temperature"),
         gr.Slider(