Hello.
user
Hello, how may I get off to you?
assistant
Due to sudden change in the dates of submitting my research documents, so I need to change my schedule dates.
user
Sure, may I know your name to check the data base and get back to you? Ok, please wait for a while.
assistant
I am Christopher Lee. Ok.
user
Thanks for waiting, there is no reservation found by your name in the reservation list.
assistant
Ok, no problem. Thanks for your help.
user
Thank you for approaching us.
assistant