You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I want to cancel my reservation, because I have another important meetings on those dates so can you please cancel my reservation?

ASSISTANT: Sure, I will help you in cancelling your reservation.

USER: Thanks.

ASSISTANT: May I know your name please?

USER: Sure, my name is Katherine Clark.

ASSISTANT: Ok, please wait a moment.

USER: Ok.

ASSISTANT: Sorry, there are no reservations found on this name.

USER: Oh! May be I am not booked my ticket properly at that time. Thank you for your information.

ASSISTANT: Thank you for approaching us.