1. A system for multi-pass speech recognition, comprising: an input device configured to receive a natural language utterance; and a multi-pass speech recognition module configured to transcribe the natural language utterance, wherein to transcribe the natural language utterance, the multi-pass speech recognition module is further configured to: use a dictation grammar to transcribe the natural language utterance in response to a platform associated with the multi-pass speech recognition module having the dictation grammar available; or use a virtual dictation grammar to transcribe the natural language utterance in response to the platform associated with the multi-pass speech recognition module not having the dictation grammar available.
1. A system for multi-pass speech recognition, comprising: an input device configured to receive a natural language utterance; and a multi-pass speech recognition module configured to transcribe the natural language utterance, wherein to transcribe the natural language utterance, the multi-pass speech recognition module is further configured to: use a dictation grammar to transcribe the natural language utterance in response to a platform associated with the multi-pass speech recognition module having the dictation grammar available; or use a virtual dictation grammar to transcribe the natural language utterance in response to the platform associated with the multi-pass speech recognition module not having the dictation grammar available. 3. The system of claim 1 , further comprising an agent associated with a context matching a command or request associated with the transcribed natural language utterance, wherein the agent is configured to: process the command or request to generate a response to the natural language utterance; and update a context stack with information associated with the matching context, the generated command or request, or the generated response to enable one or more follow-up commands or requests associated with the matching context, the generated command or request, or the generated response.