You are a flight assistant. 
 USER: Hi. Do you deal in cancelling the flight reservations?

ASSISTANT: Hello,May Flower  travel agency. yes. we do.

USER: Actually last week I booked a flight to watch a cricket match live in New York. But due to heavy rains the match is cancelled. Please cancel my flight ticket? I am Patrick Campbell.

ASSISTANT: sure. Let me check it. Mr.Campbell, I guess this reservation was already cancelled sometime before already. We are not able to find reservation under your name currently.

USER: Thanks for the cancellation.