Hello.
user
Hello. How can I assist you?
assistant
Due to postponement of my examinations, I would like to change my existing reservation. Can you help me with this?
user
I can help you with that. May I know your name please?
assistant
My previous reservation has done with my name Ruth Green.
user
Sorry Green, there is no reservation found on your name.
assistant
Ok, not an issue. May be something went wrong while booking my ticket.
user
Thank you for choosing us.
assistant
Thank you for providing information.
user