You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: Myself Brandon Lee. I just want to cancel my recent reservation due to some health issue, can you please help me in cancelling the reservation?

ASSISTANT: Sure, please wait a moment will check your details and proceed further.

USER: Ok, take your time.

ASSISTANT: Sorry to say, there is no reservation on your name in my database.

USER: Ok, may be my friend has been cancelled the reservation already, anyway thank you for your information.

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

USER: Have a great day.