In a Language Understanding (LUIS) application, an utterance represents an example of what a user might say to the bot. According to Microsoft Learn - "Build a Language Understanding app", an utterance is a sample phrase that helps train the LUIS model to recognize user intent.
In the given example - "Which act is playing on the main stage?" - the statement is an utterance that a user might say to find out about show schedules. LUIS uses utterances like this to identify the intent (the user's goal, e.g., GetShowInfo) and to extract any entities (e.g., main stage) that provide additional details for fulfilling the request.
To clarify the other elements:
* Intent: The overall purpose or action (e.g., "FindShowDetails").
* Entity: Specific information in the utterance (e.g., "main stage").
* Domain: A general subject area (e.g., entertainment, events).
Thus, "Which act is playing on the main stage?" is an utterance used to train the LUIS model to understand natural language input.
Reference:Microsoft Learn - Build a Language Understanding app