Hi.
user
Hello. How can I assist you?
assistant
My visit to the Planetarium has been postponed, due to some technical issues. This is the reason, I want to change my reservation with the name of Carol Adams.
user
Ok, please wait.
assistant
Ok.
user
 Sorry, no reservation was  found on your name.
assistant
No, problem. I will check with another option.
user
Thank you, have a nice day.
assistant
Thank you for your information.
user