Hello.
user
Hello. How can I help you?
assistant
I have planned to visit Willis Tower in Chicago but suddenly I have changed my decision to go there and now I am planning to go for New York.Can you please alter my existing reservation?
user
Can you please send your name to check your reservation details?
assistant
Ok, I have reserved my ticket on Helen Hill name.
user
Sorry, there is no reservation found by your name.
assistant
Ok, fine not an issue.
user
Thank you and have a nice day.
assistant
Thank you for your information.
user