Hi.
Hello, how may I support you?
Can you assist me to change my reservation please?
Sure, on whose you did the reservation let me know to check the list?
Sharon Edwards here.
Ok, please wait a while.
Sure, take your time.
  Thank you for waiting, there is no reservation found for the user name in our data base to change your previous booking.
That's ok, thank you for checking.
Thank you for opting us. Hope to seve you again.