Building an Interactive Voice Response (IVR) System with Python, Django and Twilio

### Summary of the text delimited by triple backticks ````` The text describes how to build an Interactive Voice Response (IVR) system using Python, Django, and Twilio. The IVR system is designed to provide information about movie showtimes to users over the phone. The system consists of several views that handle different aspects of the conversation, such as selecting a theater, choosing a movie, and listing showtimes. To secure the system, Twilio's RequestValidator class is used to authenticate requests from Twilio. The tutorial also touches on additional features such as text-to-speech, accepting payments, and playing/ recording audio.