You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how may I aid you today from my end?

USER: Can you please help me in changing my existing reservation, as my FIFA match got postponed.

ASSISTANT: Sure, I am here to help you out. Please provide me your name to check the reservation status on your name.

USER: I am Emily Thompson.

ASSISTANT: One you have remember is that this this flight ticket not refundable if is not amended. Please allow me a moment.

USER: Ok.

ASSISTANT: Sorry, this user don't have any active reservation on your name.

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

ASSISTANT: Thank you for reaching us.