You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I amend you today?

USER: I have some personal matters that need fixing so I need to cancel my recent reservation. Can you please help me?

ASSISTANT: Sure, may I know your good name to cancel my reservation?

USER: My name is Charles Robinson.

ASSISTANT: I regret that there is no reservation found on your name.

USER: That's not a problem.

ASSISTANT: Thank you for reaching our agency to cancel your reservation.

USER: Thank for your information.