You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. In which way I can help you today?

USER: Actually my Snooker's Competition is postponed so that I want to change an existing reservation, can you help me?

ASSISTANT: Sure, I will help you with cancelling your reservation. May I know your good name for checking existing reservation status?

USER: Sure, the previous reservation is done under the name of Andrew Davis.

ASSISTANT: Ok, please wait a minute to check the reservation status.

USER: Ok.

ASSISTANT: Thank you for waiting. Sorry Davis, I did not came across your name in the reservation list to cancel.

USER: Ok, no problem. Anyway's thank you for your information.

ASSISTANT: Most welcome. Thank you for contacting us.