Fix the bug of "No input provided".

Another bug "invalid audio type" still needs more information.

app.py

@@ -177,7 +177,7 @@ def create_demo():
                     sources=["microphone"], type="numpy", label="Speak your message"
                 )
 
-                text_input = gr.Textbox(label="Or type your message", type="text")
+                text_input = gr.Textbox(label="Or type your message", type="text",value="Can you give a brief introduction of yourself?")
 
                 output_audio = gr.Audio(label="Assistant's Voice", type="numpy")