Hello.
user
Hello. How may I help you out?
assistant
I am John Lopez, I need to change my reservation as my schedule got postponed. Can you please help me about that?
user
Sure, I will help you in changing the reservation.
assistant
Thank you for considering my request.
user
Sorry, there are no reservations found.
assistant
It's ok, anyway thank you for the information.
user
Thank you for reaching us.
assistant