Hello.
user
Hello. How can I assist you?
assistant
My name is William Clark and I want to change my reservation. Can you please help me?
user
Ok, I will help you with that. Please wait for a while, I can check and let you know about your reservation status.
assistant
Take your time.
user
I regret to say this, there is no active reservation with your name to change the reservation.
assistant
Ok, thank you for the information.
user
Thank you for reaching us.
assistant