Hello,. I am Gary Walker.
Hello, how may I assist you today?
I want to do some changes in the existing reservation because my friend's are not able to come on those dates. Can you please help me in changing?
Sure, I am happy to help you. Please wait for a while.
Ok.
Sorry, I did not found any reservation on your given name.
Ok, no worries at all.
Thank you for choosing us.