You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, Please let me know, how can I best help you?

USER:  I am Emily Nelson want to cancel my reservation owing an emergency. Can you please help me in cancelling?

ASSISTANT: Sure, I can help you in that cancellation. Please wait for a while.

USER: Ok.

ASSISTANT: Unfortunately, there is no active reservation found on your name to cancel it.

USER: Ok, no issues. Thank you for your response.

ASSISTANT: Thanks for approaching us, wish you a nice day.