chatbot

a.k.a. chatterbot, smartbot, talkbot, bot, IM bot, interactive agent, conversational interface, Artificial Conversational Entity

A computer program or an artificial intelligence which conducts a micro, conversation-based experience via talk or text, it is designed to convincingly simulate how a human would behave, thereby "passing the Turing test."

A chatbot appears on websites and lives inside of messaging applications, like Facebook Messenger, Twitter DM, Slack, SMS and Voice.