Voice recognition device and method of controlling same

A method of controlling a voice recognition device, comprising:

• extracting at least one of a first utterance element indicating an execution command and a second utterance element indicating a subject from a voice utterance of a user;
• determining a current domain to provide a response information regarding the voice utterance based on the first and the second utterance elements;
• determining a candidate conversation frame to provide the response information regarding the voice utterance on at least one of a current domain and a previous domain, based on a conversation state on the current domain and the previous domain, wherein the previous domain is determined from a previous voice utterance of the user;
• and
• providing the response information regarding the voice utterance based on the candidate conversation frame.