Hello.
user
Hello. How can I assist you now?
assistant
 I am Richard Walker want to cancel my reservation due to prepone of my exams. Can you help me in cancelling?
user
Sure, I am glad to assist you in flight ticket cancellation process.
assistant
Thank you.
user
Please allow me a moment.
assistant
Ok.
user
Thank you for waiting, there is no reservation found in our data base to cancel your flight ticket booking.
assistant
Ok, not a problem. Thank you for your response.
user
It's my pleasure to help you and thank you for approaching us.
assistant