A demo chat bot running on heroku. For actual interaction, try messaging on this page: https://www.facebook.com/chatbotmessenger/ (only works for testers, so just send a message and I will add you to testers list)
The demo uses Facebook Messenger gem, which is a Ruby client for Bots on Messenger
git clone git@github.com:hyperoslo/facebook-messenger-demo.git
cd facebook-messenger-demo
bundle install
bundle exec rake db:migrate db:create db:seed
bundle exec rails s