Hello,.
user
Hello, how could I assist you at this moment?
assistant
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?
user
Sure, I am here to help you. Please wait for a while.
assistant
Sure.
user
Thanks for waiting. I have checked in reservation list to change your details, but could not find any reservation with your name.
assistant
Ok, not a problem at all. Thanks for your assistance.
user
Thanks for your approach.
assistant