Values:
MATCH_TYPE_UNSPECIFIED (0):
Not specified. Should never be used.
INTENT (1):
The query was matched to an intent.
DIRECT_INTENT (2):
The query directly triggered an intent.
PARAMETER_FILLING (3):
The query was used for parameter filling.
NO_MATCH (4):
No match was found for the query.
NO_INPUT (5):
Indicates an empty query.
EVENT (6):
The query directly triggered an event.