Hi. I am Michael Jackson.
Hello, how may I serve you today?
 I make a reservation earlier to attend a get together party with my college friends. Due to some issues in college it got postponed. Can you please help me in changing the reservation?
Sure, I will help you with that. Please wait for a moment.
Ok.
Thank you for waiting, sorry there is no reservation found on your name in our system.
Ok, no problem. Thank you for your response.
Thank you for reaching us, we hope see you again.