Hi. Jessica Scott here.
user
Hello, how can I best assist you now?
assistant
Can you change my  flight ticket reservation?
user
Sure, please wait for a while.
assistant
Ok.
user
Thanks for remaining so positive. We are sorry to say that, there is no active reservation found on your name.
assistant
Ok, not a problem. Thank you.
user
Thanks for reaching us, wish you a great day.
assistant