Hello.
user
Hello. How can  I aid you?
assistant
Can you please help me in changing my existing reservation? As my meeting got postpone at Washington.
user
Sure, I am gleeful to assist you.
assistant
Thank you.
user
May I know your name?
assistant
My name is Stephanie Robinson.
user
Please wait a while.
assistant
Sure, I will wait for your response.
user
 Thank you for waiting, but I am sorry to say that, there is no active reservation found with your name in our database to change it.
assistant
Ok, not an issue. Thank you for providing information.
user
Thank you for consulting us.
assistant