An electronic device includes a microphone, a memory and at least one processor. The at least one processor is configured to acquire utterance data corresponding to a voice of a user through the microphone, determine an intent and provide content to the user based on the intent. When intent determination fails, then one or more models are updated using text obtained from the utterance data. The intent determination may fail when there is no verb (predicate) in the user utterance. The models are updated by searching for named entities and determining domains to be used for the model updates. The domains are determined based on categories. The categories are found using a named entity search (NES). Examples of categories are music artists, music albums, movie titles, TV program channels, video clip channels, radio programs, and podcast titles.