Hello.
user
Hello, how can I assist you at present?
assistant
Can you please help me to change my existing reservation?
user
Sure, I am here to help you.
assistant
Thank you.
user
On whose name, you want to change the reservation?
assistant
Paul Green here.
user
Ok, please wait for a minute.
assistant
Sure.
user
Sorry to say that, no reservation was found on your name to change.
assistant
Thanks for your service.
user
Thank you for choosing us.
assistant