Method and system for asynchronously processing natural language utterances

The methods and systems described herein may asynchronously process natural language utterances to provide real-time response performance and natural interaction with users. In particular, the methods and systems described herein may use various natural language speech recognition and interpretation components to identify a request (e.g., a query or command) in an utterance. The request identified in the utterance may then be processed with one or more domain agents, which may submit duplicate queries to multiple different data sources to process the request. The domain agents may then asynchronously evaluate responses to the duplicate queries to return results to users in a timely and natural manner, and further to account the fact that the different data sources may respond to the queries at different speeds, provide unsatisfactory responses to the queries, or fail to respond to the queries at all.