A dialog system is a computer system intended to converse with a human, with a coherent structure. Typical examples include automated help desks (some kind of phone-service which provides technical help for any user) and booking centers. With enhanced capabilities of speech recognition software, dialog systems are also becoming increasingly popular in the medical sector.
Technical details: For cloud based systems we integrate speech recognition on Asterisk PBX systems. You can see this technology in action in Jeannie. Give her a call, download her or get her to know through your browser.