Hi.
user
Hello. How may I assist you?
assistant
Please help me in changing of my existing reservation.
user
Sure, I am here to help you out.
assistant
Thank you.
user
May I know your name please?
assistant
Anna Thomas.
user
Wait a moment please.
assistant
Ok.
user
Anna Thomas, we haven't found any reservation under your name in our database.
assistant
Ok, no problem. Thank you.
user
Thank you for choosing us.
assistant