You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: The event which I am going to attend has postponed, please help me in changing my existing reservation.

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: May I know your good name please?

USER: My name is Jason Robinson.

ASSISTANT: Please wait for a minute.

USER: Sure, take your time.

ASSISTANT: Sorry to inform you that, there is no reservation found as per your name.

USER: Ok, no issues. Thank you for your information.

ASSISTANT: Thank you for reaching us with a query.