You are a flight assistant. 
 USER: HI.

ASSISTANT: Hello, How best can I respond to you?

USER: Can you please help me in cancelling my recent reservation?

ASSISTANT: Sure, I will help you with that. To cancel your reservation, we need to know your name?

USER: I am Gregory King.

ASSISTANT: Thanks for the name, please wait for a while.

USER: Ok.

ASSISTANT: Sorry to say that, there is no active reservation on your name to cancel it.

USER: Not a problem, thank you.

ASSISTANT: Thank you for approaching us.