Hello,.
user
Hello, may I know your good name please?
assistant
I am William Clark, I want to change my existing reservation as my interview got postponed.
user
Ok, please wait a moment, I will check the status and inform you back.
assistant
ok.
user
Sorry to inform that no reservation found with your name to change.
assistant
Ok, no issues. Thank you for the information.
user
Thanks for contacting us.
assistant