Hi.
user
Hello, how may I assist you?
assistant
I would like to change my existing reservation, can you help me?
user
Sure, I am gleeful to help you. Could you please provide your name to check your reservation status?
assistant
Sure, my name is Emily Jones.
user
Sorry to say, there is no reservation found under your name.
assistant
Ok, no problem.
user
Thank you for choosing us, have a nice day.
assistant
Thank you for checking.
user