You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I want to cancel my recent reservation. Can you help me out?

ASSISTANT: Sure, may I know your good name?

USER: I am Michelle Campbell.

ASSISTANT: Wait a minute.

USER: Ok, take your time.

ASSISTANT: Sorry, we could not find any reservation on your name.

USER: That's ok. Anyways, thank you.

ASSISTANT: Thank you for choosing us.