Hello.
Hello, how may I assist you today?
I am Karen Perez. I have recently reserved a flight ticket from Las Vegas, now I am not willing to go near to my destination place. So can you please help me in changing my travelling dates to next week?
Sure, I am here to help you. Please wait for sometime to check the status of your reservation.
Ok, sure take your own time.
Thank you for waiting. Sorry to say that, no  active reservation was found on your name in our database.
Ok, fine thank you for checking.
Thank you for choosing us.