Hello.
Hello, how may I help you today?
Due to some entrepreneurship meeting, I am going to change my existing reservation. Can you please help me in changing the reservation?
Sure, I can change your reservation right now. Before that I need to know your good name please?
I am John Anderson.
 Thank you. Please stay online for a while, I will check your reservation status and let you know.
Sure.
Sorry to say that, there is no active reservation found on your name.
No problem, thank you for the information.
Thank you for availing us.