You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I aid you for the day?

USER: Owing to an emergency, my business conference got postponed, so I want you change my existing reservation.

ASSISTANT: Sure, may I know your name to check the reservation?

USER: Sure, George Campbell here.

ASSISTANT: Please wait a minute, I will check the reservation and get back to you.

USER: Sure.

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

USER: Ok, no issues. Thank you for your kind information.

ASSISTANT: Thank you for reaching us.