You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: Owning to an emergency, I want to cancel my recent reservation. Can you please help me out?

ASSISTANT: Sure, can I know your name please?

USER: Sure, my name is Barbara Clark.

ASSISTANT: Sure, please wait a moment.

USER: Sure, take your time.

ASSISTANT: Sorry Clark, there is no reservation found on your name.

USER: Ok, no problem.

ASSISTANT: Thank you for approaching us.

USER: Thank you for your information.