Hello. Stephanie Moore here.
user
Hello, may I know which service you are looking for?
assistant
I would like to change my existing reservation, can you help me for that because I have some work in my hometown.
user
Sure, please wait for a while.
assistant
Ok.
user
Sorry for the inconvenience, I haven't found any existing reservation in our database with your name.
assistant
Ok, that's fine. Thank you for your services.
user
Thank you for consulting us.
assistant