You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I guide you?

USER: My name is Rebecca Parker. Actually, I booked a ticket to NYC for a carnival but due to bad weather, I want to postpone my trip.

ASSISTANT: Sure, please hold on for a moment while I check.

USER: Ok.

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

USER: That's ok. Thank you.

ASSISTANT: Thank you.