Hello.
user
Hello. How may I help you out?
assistant
I am Brian Collins, I want to change my reservation because my schedule got  postponed to some other day. Thank you for the help.
user
Hold on for a second.
assistant
Ok, sure.
user
Sorry, there are no reservations found.
assistant
It's ok, anyway thank you for the help.
user
Thank you for reaching us.
assistant