13. A system to deliver targeted advertisements and track advertisement interactions in voice recognition contexts, comprising: one or more processors configured to: receive a natural language utterance from a voice-enabled device; process the natural language utterance to identify one or more requests associated with the natural language utterance; determine that the natural language utterance contains a request that is incomplete or ambiguous; select one or more advertisements associated with the natural language utterance; output the one or more selected advertisements to the voice-enabled device; monitor interaction between a user and the one or more selected advertisements; and interpret the request that is incomplete or ambiguous based on the interaction.
20. The system recited in claim 13 , wherein the one or more processors are further configured to: extract one or more profile criteria from the natural language utterance.