You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I be of your service today?

USER: My name is Sarah Miller.

ASSISTANT: OK.

USER: My business meeting was cancelled, so please cancel my recent reservation.

ASSISTANT: Sure, Please wait a minute. I will check your reservation and update you.

USER: Ok.

ASSISTANT: I regret that there is no reservation found on your name to cancel.

USER: Not an issue, thank you for your help.

ASSISTANT: Thanks for contacting us, have a good day.