https://medium.com/@alfianlosari/chatbot-inventory-tracking-ios-android-app-with-flutter-dialogflow-and-gcp-d7d903ce7f90

Creating Chatbot powered Machine Learning apps is becoming much more easier for developers using Dialogflow from Google. According to Google:

In this article, we will build a Chatbot inventory tracking app using Dialogflow, for simplicity we will use Firebase Realtime Database to store our product description and in stock quantity. We will use Dialogflow fulfillment webhook that will trigger the Google Cloud Function and handle the response depending on the action. The app will use Flutter, so it runs on iOS and Android. The project GitHub repository can be accessed inside here.