You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: Can you please cancel my reservation?

ASSISTANT: Sure, may I know your name?

USER: I am Charles Miller.

ASSISTANT: Please wait for a moment to check your details.

USER: Ok.

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

USER: Ok, not a problem.

ASSISTANT: Thank you for reaching us.

USER: Thank you.