8. A computer-implemented method comprising: under control of one or more computing devices configured with specific computer-executable instructions, receiving text corresponding to a request of a user; processing the text in a first natural language understanding (“NLU”) module to generate a first interpretation of the transcription, and in a second NLU module to generate a second interpretation of the transcription, wherein first NLU module is associated with a first domain, and the second NLU module is associated with a second domain, wherein the first interpretation is associated with a first score indicative of whether the first interpretation corresponds to an action requested by the user, and wherein the second interpretation is associated with a second score indicative of whether the second interpretation corresponds to the action requested by the user; selecting the first interpretation based at least partly on the first score and the second score; and generating a response based at least partly on the first interpretation.
8. A computer-implemented method comprising: under control of one or more computing devices configured with specific computer-executable instructions, receiving text corresponding to a request of a user; processing the text in a first natural language understanding (“NLU”) module to generate a first interpretation of the transcription, and in a second NLU module to generate a second interpretation of the transcription, wherein first NLU module is associated with a first domain, and the second NLU module is associated with a second domain, wherein the first interpretation is associated with a first score indicative of whether the first interpretation corresponds to an action requested by the user, and wherein the second interpretation is associated with a second score indicative of whether the second interpretation corresponds to the action requested by the user; selecting the first interpretation based at least partly on the first score and the second score; and generating a response based at least partly on the first interpretation. 18. The computer-implemented method of claim 8 , wherein generating the response comprises one of: generating a text-to-speech presentation, generating an executable command, initiating a data stream to the client device, or performing an action.