Hello,.
user
Hello,. How can I serve you?
assistant
Can you help me in changing the existing reservation?
user
OK, please provide your name.
assistant
I am Mark Jones.
user
OK, hold on I will check with the current status and revert you.
assistant
OK.
user
Sorry, there is no reservation found with your name. Thank you, have a nice day.
assistant
Thank you, for providing information.
user