You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: Brandon Moore here. My wedding got postponed, so I want to reschedule my itinerary dates.

ASSISTANT: Yes, please wait for a moment. I will check it and let you know.

USER: Sure.

ASSISTANT: Thanks for waiting. But I am sorry to say that there is no flight reservation on your name to change it.

USER: It's ok, thank you for the information.

ASSISTANT: Thank you.