3. A method according to claim 2 , further comprising: if the user utterance is classified as a high confidence utterance, advancing the user to a menu node determined to be associated with the high confidence utterance; if the user utterance is classified as a medium confidence utterance, prompting the user for confirmation of a menu node determined to be associated with the medium confidence utterance; and if the user utterance is classified as a low confidence utterance, requesting the user to restate the user utterance.
3. A method according to claim 2 , further comprising: if the user utterance is classified as a high confidence utterance, advancing the user to a menu node determined to be associated with the high confidence utterance; if the user utterance is classified as a medium confidence utterance, prompting the user for confirmation of a menu node determined to be associated with the medium confidence utterance; and if the user utterance is classified as a low confidence utterance, requesting the user to restate the user utterance. 4. A method according to claim 3 , further comprising obtaining implicit confirmation of the high confidence utterance before advancing to the associated menu node.