Hello.
user
Hello, how may I help you?
assistant
Can you please help me to change my existing reservation?
user
Sure, I am here to help you.
assistant
Sure, I am Carol Thomas.
user
May I know your name please?
assistant
Carol Thomas.
user
Sorry to inform you that there is no active reservation on your given name.
assistant
Ok, no problem. Thank you for checking.
user
Thanks for contacting us.
assistant