You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you at this moment?

USER: I am Shirley Evans, I would like to cancel my recent reservation, can you help me with this?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Sorry to notify that, we did not find any reservation with your name.

USER: That's fine, thanks for your information.

ASSISTANT: Thank you for approaching us.