Hello, I am Raymond Brown.
Hello, how can I amend you?
Change     Actually I made a earlier reservation to go for a trip with my friends, but heavy work load in office I want to change my reservation. Can you help me with it?
 Ok, please wait I will check and revert you.
OK.
 Sorry, no reservation was found on your name.
No problem, thank you.
 Thank you for opting us.