10. The automatic conversation system according to claim 7 , wherein the conversation server is adapted to send, to the conversation device, operation control information in which an operation to be executed by the conversation device is described; and the conversation device is adapted to execute the operation based on the operation control information along with the output of the reply sentence.
11. The automatic conversation system according to claim 10 , wherein the conversation device is a terminal device that is controlled based on the operation control information.