You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you now?

USER: My plan to visit The Fillmore got postpone as of now, so please help me with changing my existing reservation.

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: May I know your good name please?

USER: Sure, my name is Amanda Walker.

ASSISTANT: Ok, please wait a moment, I will check the reservation list and revert you.

USER: Sure, take your time.

ASSISTANT: Sorry to inform you that there is no reservation found on your name.

USER: Ok, not an issue.

ASSISTANT: Thanks for choosing us and have a nice day.

USER: Thank you for your information.