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".
--------
Question: I have planned to book a plane ticket from PHX to OAK, can you assist me?

Answer: customer

Question: Origin: ATL and Destination: LAX.

Answer: customer

Question: Sure, please share your travelling dates.

Answer:
agent