You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Raymond White here. My wedding has been postponed, so I want to reschedule my itinerary dates.

ASSISTANT: Sure, I will help you. Ok. Please mention your name.

USER: I mentioned my name.

ASSISTANT: Ok, please give me a moment.

USER: Sure.

ASSISTANT: Sorry, no reservation found on your name to change your reservation.

USER: No problem, thank you.

ASSISTANT: Welcome. have a nice day.