In this task, you are given an utterance, which is a part of a conversation between a user and an agent. Your job is to detect the speaker. The user usually commands the agent to schedule events, retrieve event information, and check the schedule. While the agent's response is an answer to the user's questions or follow-up questions on the user's command. Answer with "User" or "Agent".

Ex Input:
Create a meeting for me and my team to go over fun-day excursions at 4p next Thursday

Ex Output:
user


Ex Input:
I've changed "foot ball match" to be for 3 hours.

Ex Output:
agent


Ex Input:
any chance of snow?

Ex Output:

user