You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am Barbara Smith. Can you help me in cancelling my recent reservation?

ASSISTANT: Sure, please wait for a while.

USER: Sure.

ASSISTANT: Sorry Barbara, there is no active reservation found with your name in our records.

USER: It's ok, thank you for checking.

ASSISTANT: My pleasure.