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".

[EX Q]: Thank you for your details, there are no flights found with the given details.
[EX A]: agent

[EX Q]: Do you have any time concern?
[EX A]: agent

[EX Q]: I would like to visit the Pacific Science Center in Seattle. Can you help me in booking a ticket?
[EX A]:
customer