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".

[Q]: Make a appointment for 9:00 to 9:30 AM. tomorrow
[A]: user


[Q]: It will be clear with a high of 0.00 °F and a low of 0.00 °F in Philadelphia between February 3rd and February 9th.
[A]: agent


[Q]: Here is the contact information for Olinda:
[A]:
agent