Update app.py

app.py

@@ -317,7 +317,7 @@ with gr.Blocks() as demo:
     
     with gr.Row():
         file_input = gr.Files(label="Upload your PDF documents", file_types=[".pdf"])
-        update_button = gr.Button("Update Vector Store")
+        update_button = gr.Button("Upload PDF)
     
     update_output = gr.Textbox(label="Update Status")
     update_button.click(update_vectors, inputs=[file_input], outputs=update_output)
@@ -325,7 +325,7 @@ with gr.Blocks() as demo:
     with gr.Row():
         with gr.Column(scale=2):
             chatbot = gr.Chatbot(label="Conversation")
-            question_input = gr.Textbox(label="Ask a question about your documents or use web search")
+            question_input = gr.Textbox(label="Perplexity AI lite, enable web search to retrieve any web search results. Feel free to provide any feedbacks.")
             submit_button = gr.Button("Submit")
         with gr.Column(scale=1):
             temperature_slider = gr.Slider(label="Temperature", minimum=0.0, maximum=1.0, value=0.5, step=0.1)