Hi. I am Robert Walker.
user
Hello, how can I help you today?
assistant
Can you please help me in changing my existing reservation?
user
Sure, please wait for a moment, I will check and get back to you.
assistant
Ok.
user
Sorry, there was no reservation found with your name to change.
assistant
It's ok, not a problem. Thank you.
user
Thank you for opting us.
assistant