Hi. I am Sandra Miller.
user
Hello, how may I provide assistance to you?
assistant
Can you help me in changing my recent reservation, as my interview is postponed?
user
Sure, we are here to help you. Please wait for  a while.
assistant
Sure.
user
Thank you for your time. We did not find any reservation with your name.
assistant
That's ok, thank you for checking.
user
Thank you for choosing us.
assistant