Hi.
user
Hello. How can I assist you?
assistant
As my leave got extended, I want to change my existing reservation. Can you help me out?
user
Sure, I will help you to change your reservation. May I know your name to check your previous reservation.
assistant
Sure, my name is Joseph Carter.
user
Sorry, there is no reservation found on your name to change your reservation.
assistant
That's fine, thank you for the information.
user
Welcome. Thank you for checking.
assistant