Hello.
user
Hello, may I know your name, please?
assistant
Cynthia Smith here.
user
How may I provide assistance to you Cynthia Smith?
assistant
I need to change my existing reservation as my sister blessed with a baby before the expected delivery date. Please help me in changing?
user
Sure, we will help you. Ok, please wait a minute, let me check your reservation status in our database and get back to you.
assistant
Sure, I will wait.
user
Thank you for waiting. We could not find any reservation on your name in our database.
assistant
 Thank you for providing the information.
user
Thank you for communicating  with us, hope we serve you next time.
assistant