You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I am planning to cancel my recent reservation, due to some work. Can you please help me out to cancel my ticket?

ASSISTANT: May I know your name please?

USER: Sure, my name is Helen Turner.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Sorry, no reservation found on your name to cancel.

USER: That's fine, thank you for your help.

ASSISTANT: Most welcome.