You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I serve you?

USER: I want to cancel my reservation, can you please assist me?

ASSISTANT: Sure, May I know your name?

USER: My name is Kimberly Miller.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: Sorry, No reservation found on your name.

USER: Ok, not a problem. Thank you.

ASSISTANT: Thank you for choosing us.