You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you today?

USER: I am Kathleen Miller, want to cancel my reservation. Can you please help me?

ASSISTANT: Sure, I am glad to help you with that.

USER: Thank you.

ASSISTANT: Ok, wait for a minute.

USER: Ok.

ASSISTANT: Sorry to say that, there is no reservation found on name in our records.

USER: That's ok, thank you.

ASSISTANT: Thank you for choosing us.