Hello.
user
Hello. How may I help you out?
assistant
I am Sarah Rodriguez, I need to modify my reservation as my schedule got postponed.
user
Sure, I will help  you out.
assistant
Thank you.
user
Please wait for a while.
assistant
Ok.
user
Sorry, there are no reservations found.
assistant
It's ok, anyway thank you for the information.
user
Thank you for choosing us.
assistant