You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Amanda Campbell.

ASSISTANT: How may I support 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 a moment.

USER: Ok.

ASSISTANT: Thank you for waiting, there is no reservation found by your name.

USER: Ok, no issues.

ASSISTANT: Thank you for opting us.

USER: Thank you for your information.