You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

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

ASSISTANT: Sure, I can assist you.

USER: Thank you.

ASSISTANT: Please wait a while.

USER: Sure.

ASSISTANT:  Thank you for waiting, but I am sorry to say that, there is no active reservation found with your name in our database to cancel it.

USER: Its ok, thank you.

ASSISTANT: Thank you for choosing us.