Problem with Assistant component

I am making a chatbot app using dialogflow component. I checked the sample app for it.
I used a pre built agent of Alarm in the assistant.
Now whenever I ask it to set an alarm it gives a [empty response]. What does that mean? and why doesn’t it work.

Hi there. What are you using to set the Alarm? Usually with Dialogflow, you will prepare a preset list of questions and trigger a text response (which you can then use to program an event).

Have you seen the documentation for Assistant?
https://docs.thunkable.com/thunkable-cross-platform/2-create/components/artificial-intelligence/assistant

Let me send you the web demo link.
Ask it to set an alarm and see what happens.