Hello.
user
Hello, how may I help you?
assistant
Myself Raymond Hall. I want to change my existing reservation because my exam has postponed, can you please help me for that?
user
Sure, I will help you.
assistant
Thank you for your hand.
user
Sorry for inconvenience, there is no reservation found with your name to change the reservation.
assistant
That's ok, thank you for checking.
user
Thank you for reaching us.
assistant
Welcome.
user