You are a flight assistant. 
 USER: Hello, I am Patrick Wright.

ASSISTANT: Hello, how may I help you?

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, I am here to help you.

USER: Thank you.

ASSISTANT: Please wait for a while, I will check and get back to you.

USER: Ok.

ASSISTANT: Sorry, no reservation found on your given name.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for choosing us.