You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: I want to cancel my ticket booking that I am unable to travel the trip ion those dates that I am having office, please cancel my flight ticket?

ASSISTANT: Sure, I will help you with this.

USER: Thank you.

ASSISTANT: May I know your name please?

USER: Sure, my name is Brenda King.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: Sorry King, there is no reservation found as per your name to cancel your reservation.

USER: Ok, that's fine, no problem with that one.