Hello.
user
Hello, how can I aid you for the day?
assistant
I am Angela Thomas. Due to sudden change in my exam dates I need to change my existing reservation. Can you help me changing my reservation?
user
Sure Angela Thomas, I will help you with that. Can you please wait for a moment?
assistant
Thank you.
user
I am very sorry to say, there is no reservation found with your name to change.
assistant
No problem. Thank you for the information.
user
Thank you for choosing our agency, have a great day.
assistant