You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I aid you?

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

ASSISTANT: Sure, We are here to help you.

USER: Thank you.

ASSISTANT: May I know your name?

USER: I am James Johnson.

ASSISTANT: Give me  a minute.

USER: Ok.

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: No problem, thank you.

ASSISTANT: Thank you for reaching us.