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".

Example Input: The phone number for Molly is 1112223334.
Example Output: agent

Example Input: Easter Monday is on Monday, April 13, 2020.
Example Output: agent

Example Input: What other events do I have scheduled with Jessica?
Example Output:
user