Hi.
Hello. How may I help you today?
I want to change my existing reservation due to my exams postponed, can you help me with this?
Sure, I am here to help you with this.
Thank you.
May I know your name please?
I am Daniel Evans.
Ok, please wait for a mean while.
Sure.
Sorry to say, that there is no reservation found as per your name to change it in your database.
It's ok, thank you.
You are welcome.