Improve starting message

Gradio_UI.py

@@ -262,7 +262,8 @@ class GradioUI:
     def launch(self, **kwargs):
         import gradio as gr
 
-        history = [gr.ChatMessage(role="assistant", content="I am a professor assistant for the Data Science course! Please describe your current study needs and knowledge level and I will provide you with a custom code exercise.")]
+        history = [gr.ChatMessage(role="assistant", content="I'm the Data Science course bot! Please describe your current study needs and knowledge level and I will provide you with a custom code exercise."),
+                   gr.ChatMessage(role="assistant", content="You can start with something like 'I need help with python indexing'.")]
 
         with gr.Blocks(fill_height=True) as demo:
             stored_messages = gr.State([])