You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Joshua Garcia.

ASSISTANT: How may I help you today?

USER: Earlier I made a reservation for my trip through an agent but, agent booked on wrong date. So, I request you to please change it to my actual date.

ASSISTANT: Sure, please wait for some time.

USER: Ok.

ASSISTANT: There is no recent reservation found on your name.

USER: Ok, no problem. Thank you for giving the information.

ASSISTANT: Thank you for reaching us.