You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I guide you for today?

USER: Unfortunately, I would like to cancel my reservation which is recently done due to some business meeting postponed, can you please help me in this intent?

ASSISTANT: May I know your name?

USER: Sure, my name is Ronald Smith.

ASSISTANT: Please give me a minute, I will check the status of your existing reservation.

USER: Ok, I will wait.

ASSISTANT: Sorry, there is no reservation found under your name.

USER: Ok, no problem.

ASSISTANT: Thank you for contacting us, have a nice day.

USER: Thank you for your service.