Hi,.
user
Hello.
assistant
I am Jason Smith.
user
How may I support you today?
assistant
Please, change my earlier reservation as my meeting was postponed.
user
Please wait a moment I will check the reservation status.
assistant
Sure.
user
Thank you for waiting,  I have checked in reservation list to change your ticket, but could not find any reservation with your name.
assistant
Ok, thank you for information.
user
Thank you for availing us.
assistant