This is an example chatbot built on top of the Microsoft Bot Framework Node.JS SDK v4. It utilizes data from the 2017 and 2018 edUi Conferences, and shows how to build a conference bot that informs attendees of speaker sessions based on speaker name, subject, or location. It will also inform attendees of the time of sessions, and allows them to "save" a session, which then kicks off proactive messages as reminders. The speaker sessions are displayed as hero cards with card actions.
This example bot is detailed in a forthcoming book on building bots with the Microsoft Bot Framework. It includes a description of building it from end-to-end. If you want to know when the book is out, sign up for the Bots + Beer email newsletter.