You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, Good Morning.

USER: My name is Stephanie Edwards.

ASSISTANT: Stephanie, how can I be a help for you?

USER: Actually, I booked a ticket to NYC for a sport's event, but due to personal problems, I want to cancel my trip.

ASSISTANT: Ok Stephanie, please hold on for a moment so that I can check the details of your existing reservation.

USER: Sure, take your time.

ASSISTANT: Sorry, I could not find any ticket booked with your name to cancel.

USER: That's ok. Thank you for your time.

ASSISTANT: Thank you, have a nice day.