Hello,.
Hello, how could I assist you at this moment?
Recently I had a reservation with the name of Dennis Carter, to attend for horse racing festival, but it was changed. Can you help me to change my existing reservation?
Sure, I am here to help you. Please wait for a while.
Sure.
Thanks for waiting. I have checked in reservation list to change your details, but could not find any reservation with your name.
Ok, not a problem at all. Thanks for your assistance.
Thanks for your approach.