Hello.
user
Hello,how can I support you?
assistant
Please help me to change my existing reservation.
user
Sure, may I know your name?
assistant
Yes, I am Patrick Smith.
user
OK,please wait for a moment?
assistant
Sure.
user
Thank you for waiting, sorry to inform you that there is no reservation on your name.
assistant
OK, no issue. Thanks for your responce.
user
Thank you for availing with us.
assistant