13. The system of claim 10 , wherein the arbitration module is configured to: forward the spoken utterance to a first spoken dialog service and a second spoken dialog service within the capability catalog; receive, from the first spoken dialog service, a first confidence score associated with recognition of the spoken utterance; receive, from the second spoken dialog service, a second confidence score associated with recognition of the spoken utterance; and determine the verification criterion based at least in part on the first and second confidence scores.
10. The system of claim 9 , wherein the arbitration module is configured to: classify the spoken utterance to determine a set of candidate devices from the plurality of devices and a set of spoken dialog services based on the capability catalog; and determine the selected device from the set of candidate devices and the selected spoken dialog service from the list of candidate spoken dialog services based on a verification criterion.