I am not sure what you are trying to ask but if you are asking how to get your google assistant to ask questions (and act on the replies perhaps?). You do so by building Google Actions. Google Actions are just like mobile apps but is made available in Google Assistant when a user ask for a particular action via an Invocation such as Ok Google, Talk to Keep Count. The Google Action called Keep Count would then take over. There in the action you can program it so that the google assistant interact with the user via a series of question and replies. You can find out how to do Google Action by visiting the Google Assistant developer website at https://developers.google.com/assistant. Happy to jump on a call if you need more specific directions. I am an expert in the field of Voice Technology. You can also learn from live streams on twitch at twitch.tv/goldzulu. Hope that helps.

I would go for AWS personally as they have a lot of resource and support including practical documentation and example for LorWAN & ML. You can start by looking at this quite comprehensive blog https://aws.amazon.com/blogs/iot/connect-your-devices-to-aws-iot-using-lorawan/ I would also recommend you to check the twitch.tv channel https://www.twitch.tv/aws and https://www.twitch.tv/amazonalexa and search for iot streams where you can ask live questions if you get stuck. These resource has been useful for me many times in the past (especially for Amazon Alexa, AVS IoT implementation) Hope that helps and good luck.