You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you now?

USER: My plan to visit a function is cancelled as of now due to some problems. For this, please aid me in cancelling the reservation with the name of Kevin Parker.

ASSISTANT: Sure, I will help you with that.

USER: Thank you.

ASSISTANT: Please wait for a couple of minutes.

USER: Ok.

ASSISTANT: Thanks for waiting, Unfortunately there is no active reservation on your name to cancel it.

USER: No problem. Thank you for your response.

ASSISTANT: Thank you for choosing us.