Amazon Alexa skill integration for creating voice controlled Bubble apps

Made progress. I was able to successfully use Zapier, to extract the token sent by Alexa, and insert it into the header of the post request sent to Bubble. Bubble is able to authenticate the token, and I am able to determine Bubble’s CurrentUser based on that.

The flow is like this:

Alexa -->Zapier—>Bubble

Now, how do I make Bubble to send the response directly to Alexa, instead of sending it to Zapier?
It looks like Zapier can be used only for 1-way communication.

Here are screenshots from my Zap:

This one extracts the accessToken, from the nested JSON sent by Alexa:

This one puts the token in the header like Bubble expects, and calls my Bubble workflow: