Hi.
user
Hello. How can I help you today?
assistant
I am Kathleen Thomas want to change my reservation, can you  help me out with this please?
user
Sure, I am mirthful to help you with that.
assistant
Thank you.
user
Please hold on for a while. Sorry, I didn't find any reservation on your name in our database.
assistant
That's ok, thank you for the response.
user
Thank you for reaching us, have a nice day.
assistant