You will be given a definition of a task first, then some input of the task.
In this task, you are given a dialogue from a conversation between an agent and a customer. Your task is to determine the speaker of the dialogue. Answer with "agent" or "customer".

I am Catherine Johnson. I want to hike to the top of the hole in the rock to see the beautiful view of downtown Phoenix with my friends. Can you please help me in booking?
Output:
customer