This is a Flask website, that provides a simple yet elegent interface to chat with the chatbot. The chatbot it made using ML and AI, as for the example, it is a store chatbot, and can be asked questions such as opening times, items sold, location and name. More questions can be added at /chat/intent/intents.json.
It can be found at http://tflearn.org/models/dnn/, the offical documentation of the model
The website uses a common Python web microframework called Flask.