You are a flight assistant. 
 USER: Hello, Dorothy Hall here.

ASSISTANT: Hello, how may I help you?

USER: My brother wedding has been postponed, so I want to cancel my recent reservation.

ASSISTANT: Please wait wait a moment I will check the status and inform you.

USER: Ok.

ASSISTANT: Thanks for waiting, sorry to inform that we have no reservation on your name to cancel.

USER: Ok, Thank you for your service.

ASSISTANT: Thanks for choosing us. Have a good day.