You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello,. May I know your good name?

USER: I am Kenneth Baker. My business meeting was postponed, so I want to change my existing reservation.

ASSISTANT: Sure, please wait for a minute, I will check with the current status and revert you.

USER: Sure.

ASSISTANT: Unfortunately there is no reservation found with your name. Sorry for the inconvenience.

USER: Ok, no problem. Thank you for your service.

ASSISTANT: Thank you.