You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I guide you?

USER: Owing to an emergency, I would like postpone my meeting. Can you help me in changing my reservation?

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

USER: Sure, my name is Anna Hill.

ASSISTANT: Anna, no reservation has been found on your name in our records.

USER: Ok, thank you for your information.

ASSISTANT: Thank you for approaching us.