You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you at this moment?

USER: I planned a trip to New York this weekend, but I have a important work in Seattle, so I want to postpone my trip. Can you help in changing the reservation?

ASSISTANT: Sure, I will help you with that. Can I have the name on which you reserved earlier?

USER: The ticket is booked on the name Anthony Baker.

ASSISTANT: Ok, please be hold on for a moment and I will check for reservation status.

USER: Sure, take your time.

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

USER: That's ok, thank you for your information.

ASSISTANT: Most welcome. Thank you for choosing us, have a great day.

USER: Welcome.