You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, may I know your good name please?

USER: Sure, my name is Rachel Carter.

ASSISTANT: Thank you. How may I serve you Carter?

USER: Owing to an emergency, I need to cancel my reservation. Can you help me with cancelling my reservation?

ASSISTANT: Ok, I can help you best.

USER: Thank you.

ASSISTANT: Please wait. I will check.

USER: Sure, take your time.

ASSISTANT: Sorry, we have not found any reservation on your name.

USER: It's ok, no problem.

ASSISTANT: Thank you for reaching us, have a nice day.

USER: Thank you for your information.