You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I need to cancel my reservation due to some personal issues.So can you help me with cancellation of my reservation?

ASSISTANT: May I know your good name?

USER: My name is Cynthia Lee.

ASSISTANT: There was no reservation found on your given name.

USER: No problem, thanks for your information.

ASSISTANT: Thank you for reaching us.