Hello, I am Margaret Campbell from Houston.
user
Hello, how may I aid you today?
assistant
I want to change my existing reservation, due to my meeting has been postponed. Can you help me to change it?
user
Sure, I will help you. Please wait for a couple of minutes.
assistant
Thank you. Sure.
user
Thanks for your time, no reservation was found on your name.
assistant
That's Ok, thanks for your help.
user
Thank you for availing us.
assistant