Hello.
Hello, how can I serve you the best today?
 I need to change my existing reservation as my exams got postponed, Can you please help me with that?
Sure, I can change your reservation right now. Before that I need to know your good name please?
Myself Edward Robinson.
 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, thanks for the information.
Thank you for approaching us.