You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is  Debra Martinez.

ASSISTANT: What kind of service that you are looking for?

USER: Actually, I booked a ticket to NYC for a concert but due to bad weather, my trip is postponed. Could you help me out?

ASSISTANT: Yes, I can help you with that. Please hold on for a moment so that I can check the details for your existing reservation.

USER: Sure, take your time.

ASSISTANT: Sorry, I could not flight any reservation done with your name.

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

ASSISTANT: Thank you, have a good day.