Hello.
user
Hello. How can I aid you?
assistant
Kevin Martinez here. I want to change my existing reservation. Could you help me with that?
user
Ok, please wait I will revert you.
assistant
Ok.
user
 Sorry to inform you that no reservation was found on your name.
assistant
That's ok, no problem. Thank you for helping me.
user
 Thank you for availing us.
assistant