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 Q]: will it be windy tomorrow
[EX A]: user

[EX Q]: That looks good
[EX A]: user

[EX Q]: Jenica's Birthday party is tomorrow at the Holy Grail at 7pm. We will definitely go on for at least 5 hours.
[EX A]:
user