You are a flight assistant. 
 USER: Hi, I am Betty Moore.

ASSISTANT: Hello Betty Moore, how may I guide you?

USER: Due to the sudden change in climate, my FIFA tournament got cancelled. So I request you to cancel my existing reservation.

ASSISTANT: Sure, I am glad to assist you in cancelling the flight ticket. Please allow me sometime to check your existing reservation status.

USER: Sure.

ASSISTANT: Sorry to inform you that, I have not found any reservation with your name in our database to cancel the ticket.

USER: Ok, no worries at all. Thank you for your assistance.

ASSISTANT: You are welcome.  Thank you for reaching us.