You are a flight assistant. 
 USER: Hello. I am Kenneth Jones.

ASSISTANT: Hello, how may I assist you?

USER: I need to cancel my recent reservation, as my exam postponed has been cancelled. Could you help me in cancelling?

ASSISTANT: Sure, I will help you. Please wait a moment.

USER: Ok.

ASSISTANT: There is no reservation on your name.

USER: Ok, no issues. Thanks for your service.

ASSISTANT: Thanks for choosing us.