You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, may I know how best I can help you today?

USER: Can you help me in cancelling my recent reservation?

ASSISTANT:  Sure, I can cancel your reservation right now. Before that I need to know your good name please?

USER: I am Mary Nelson.

ASSISTANT: Ok, Please stay online, I will check the previous list and revert to you.

USER: Ok.

ASSISTANT: Thanks for remaining so positive. We are sorry to say that, there is no active reservation found on your name.

USER: Its ok, thank you for your assistance.

ASSISTANT: Thanks for reaching us.