You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: Can you please help me to cancel my reservation?

ASSISTANT: Sure, may I know your name?

USER: My name is Kenneth Green.

ASSISTANT: Please wait a moment.

USER: Sure.

ASSISTANT: Sorry to say, no reservation found with your name.

USER: Ok, not a problem.

ASSISTANT: Thanks for reaching us.

USER: Thank you.