Hello, I am Gregory Johnson.
user
Hello, How exactly I can serve you the best today?
assistant
 I want to cancel my recent reservation due to the ongoing tornado at my destination. Can you help me in the cancellation of my flight ticket?
user
Sure, we are gleeful to help you for cancellation. Please wait a while.
assistant
Sure.
user
Thanks for waiting. We did not find any recent reservation with your name.
assistant
Not really a problem. Thank you for your information.
user
Thank you for opting us. Have a great day.
assistant
Thank you.
user