50. The computer-readable storage medium of a claim 45 , further comprising instructions for: identifying a third type of concept referred to by the secondary user intent for the first substring; identifying a third substring from the first substring corresponding to the third type of concept; and determining a tertiary user intent for the third substring, wherein performing the task flow is further based on the tertiary user intent for the third substring.
50. The computer-readable storage medium of a claim 45 , further comprising instructions for: identifying a third type of concept referred to by the secondary user intent for the first substring; identifying a third substring from the first substring corresponding to the third type of concept; and determining a tertiary user intent for the third substring, wherein performing the task flow is further based on the tertiary user intent for the third substring. 53. The computer-readable storage medium of claim 50 , wherein determining the tertiary user intent for the third substring comprises: determining a confidence score for a plurality of interpretations of the third substring; and determining the tertiary user intent for the third substring based on an interpretation of the plurality of interpretations of the third substring having the highest confidence score.