Dialog API (Voice-to-Voice assistant) Deployement

Are there any demo, walkthrough or github project of deployment Voice-to-Voice assistants with Dialog API?

The most relevant resource I found is Nico's walkthrough of deploying Voiceflow Dialog API project to custom webpage https://www.voiceflow.com/blog/webpage-assistant-voiceflow-dialog-api. However the input is Text, instead of Voice. Plus the project doesn't run when I clone from github.

Any relevant resource would be appreciated. Thanks!