TASK DEFINITION: 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".
PROBLEM: I've deleted your event matching "lunch" Janice on August 31st.

SOLUTION: agent

PROBLEM: What time am I meeting with Jeong-Ho Kim?

SOLUTION: user

PROBLEM: I didn't find any events between Thursday the 16th and Saturday the 18th.

SOLUTION:
agent