Hello,I am Laura Walker.
user
Hello, what can I do for you today?
assistant
I want to change my existing reservation.
user
Sure. Please wait, while I check and get back to you.
assistant
OK, I will be waiting.
user
Thanks for your time. Sorry, there is no flight reserved on your name. Thank you reaching us and have a nice day.
assistant
OK, thank you for informing.
user