You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, How exactly I can serve you the best today?

USER: I would like to cancel my reservation, As my trip with friends got cancelled. Could you please cancel my reservation?

ASSISTANT: Sure, we are gleeful to help you for cancellation.

USER: Thanks for considering my request.

ASSISTANT: To proceed further, we need to know your name please?

USER: Sure, I am Nancy Davis.

ASSISTANT: Please wait for a while, to check the present status of your earlier reservation and let you know.

USER: Sure, take your own time.

ASSISTANT: Thank you for waiting.

USER: Ok.

ASSISTANT: Sorry to say, there is no active reservation on your name to cancel it.

USER: Ok, I think the reservation was not done properly. Anyway, thanks for your effort.

ASSISTANT: Is there any other help that I can do for you?

USER: No, thanks for asking.

ASSISTANT: Thanks for your presence, we hope to serve you again.