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?

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