You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you for the day?

USER: Owing to an emergency, I just want to cancel my recent reservation. Can you please be my helping hand with cancellation?

ASSISTANT: Sure, I am here to help you.

USER: Thanks for accepting my request.

ASSISTANT: May, I know your good name?

USER: Karen Green is my name.

ASSISTANT: Sorry, we found no reservation on your given name.

USER: Ok, thanks for your information.

ASSISTANT: Thank you for reaching us.