1. A method comprising: receiving, by a computing device, an utterance in response to displaying a plurality of items on a display; applying, by the computing device, a disambiguation model to the utterance for: identifying whether the utterance is directed to at least one of the plurality of items on the display; extracting a plurality of referential features from the utterance; and identifying an item among the plurality of items on the display corresponding to the utterance based on the plurality of referential features extracted from the utterance; and performing, by the computing device, an action associated with the utterance upon identifying the item among the plurality of items on the display corresponding to the utterance.