You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you today?

USER: The planned event got postponed to New York location, so can you please help me in changing my existing reservation?

ASSISTANT: Sure, may I know your name?

USER: My name is James Clark.

ASSISTANT: Please stand by, I will check the reservation status and let you know.

USER: Sure.

ASSISTANT: Sorry, there is no reservation found on your name.

USER: Not an issue with that one, thank you for checking my previous reservation.

ASSISTANT: Thank you for reaching us.