Hi.
user
Hello, how can I help you?
assistant
I would like to change my existing reservation which was made on the name of Patricia Parker. Can you help me with it?
user
Sure, may i know your name to check your reservation?
assistant
I have already mentioned above.
user
Ok, please wait. Sorry, no reservation has been registered with us on your name.
assistant
Ok, thank you.
user
Thanks for availing us to serve you.
assistant