Update app.py

app.py

@@ -67,10 +67,10 @@ body {
 }
 """
 
-# Create a Gradio interface with custom CSS
-demo = gr.Interface(
+# Create a Gradio chat interface with custom CSS
+demo = gr.ChatInterface(
     fn=respond,
-    inputs=[
+    additional_inputs=[
         gr.Textbox(value="You are a friendly Chatbot.", label="System message"),
         gr.Slider(minimum=1, maximum=2048, value=512, step=1, label="Max new tokens"),
         gr.Slider(minimum=0.1, maximum=4.0, value=0.7, step=0.1, label="Temperature"),