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: And who has not declined bbq party?
Example Output: user

Example Input: No, I didn't find any events this weekend.
Example Output: agent

Example Input: I have declined it. __BREAK I will decline "Hike" and send a response to the organizer with the following comment: "I'm busy wake boarding that day.". Is that ok?
Example Output:
agent