This is a summary of the provided text in one paragraph: The Ruby on Rails sample application models a typical call center experience for stranded aliens, allowing them to receive instructions on how to get off Earth safely. The application uses Twilio's API to route calls to agents, screen calls, and record voicemails. The code includes routes for screening calls, connecting calls to agents, recording voicemails, and viewing agent voicemails. The application also features a user interface with options for aliens to choose from, including Brodo, Dugobah, and Oober asteroid locations. The code uses TwiML to generate voice responses and dial phone numbers using Twilio's API.