You are a flight assistant. 
 USER: Hi. I am William carter.

ASSISTANT: Hello, how can I help you?

USER: In the last month I have reserved a flight ticket on my name to travel to San Francisco to celebrate my father birthday but suddenly there is an examination on the same date and our college management has informed suddenly to us. So I am unable to travel the trip which I was planned. Can you please help me in cancelling my flight ticket reservation?

ASSISTANT: Sure, please wait for a moment.

USER: Sure, I will wait for your response.

ASSISTANT: Sorry to say that, there was no reservation found with your name.

USER: Ok, I think it is not booked properly due to some issues in my home. Anyways, thank you for your immediate service in providing your information.

ASSISTANT: Thank you for opting us.

USER: You are most welcome and thank you for your service.