You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I am Barbara Hall. I would like to cancel my recent reservation because of some personal issue. Can you help with this?

ASSISTANT: Sure, I will help you. Please wait for a moment.

USER: Sure.

ASSISTANT: Barbara Hall, there is no reservation by your name in our data base.

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

ASSISTANT: Thank you for connection with our services, have a great day.