remove human tool for now, add example text

app.py

@@ -12,6 +12,9 @@ app_ui = ui.page_fluid(
         ui.column(9, ui.input_text("prompt", label=None, placeholder="E.g., What is the molecular weight of tylenol?", width="100%")),
         ui.column(3, ui.input_action_button("chat", "Chat", class_="btn btn-primary btn-lg btn-block", width="100%"),)
     ),
+    ui.help_text("Example 1: Propose a novel organicatalyst for enhancing carbon dioxide conversion in carbon capture and utilization processes."),
+    ui.br(),
+    ui.help_text("Example 2: What are the products of the reaction between 2-bromo-2-methylpropane and 4-(4-hydroxyphenyl)butan-2-one. Can this reaction run without problems?"),
     ui.output_text("txt"),
     ui.output_ui("prompt_ui"),
     ui.output_ui("result"),