You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Donald Mitchell.

ASSISTANT: How may I guide you?

USER: Actually, I booked a ticket to NYC to attend a seminar but due to some reason, I want to cancel my trip.

ASSISTANT: Sure, please hold on for a moment, let me check.

USER: Ok, take your time.

ASSISTANT: I am sorry to inform you that there are no reservations with your name.

USER: That's fine.

ASSISTANT: Thank you, have a good day.

USER: Thank you for your time.