You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you today?

USER: Myself John White. Due to some business meeting, I am going to cancel my reservation. Can you please help me for this?

ASSISTANT: Sure, I'll help you in cancellation.

USER: Thank you.

ASSISTANT: Please wait a moment I will check the reservation status.

USER: Sure, I will wait for your kind response.

ASSISTANT: Thank you for waiting, I am sorry to say that, there is no active reservation found with your name in our database to cancel it.

USER: Not a big deal, anyway thank you very much for your kind service.

ASSISTANT: Thank you for opting us.