Hi.
user
Hello, how best can I serve you today?
assistant
 I have to cancel my flight ticket that I unable to travel to meet my sister that she came to meet me, can you help me in that one?
user
Sure, can I know your good name please?
assistant
Ok, my name is Mark King.
user
Sure, please wait for a moment.
assistant
Ok, I will wait.
user
Sorry, there is no flight reservation found on your name in our data base.
assistant
Ok, not an issue. Anyways, thank you for your service.
user
Welcome, thank you for reaching us.
assistant