What is Twitter?
What is Twitter?
user
Twitter is a service for the publication of brief messages, called “tweets”, written by its users. It is a kind of internet forum where the users post these brief messages, and other people can read them.
assistant
Has it been around for a long time?
user
Twitter has existed since 2006.  One of its original inventors is Jack Dorsey, a well-known technology entrepreneur.  Twitter was created in order to give people a way to report breaking news and share updates about their lives.  It’s since become popular among people with an interest in all kinds of activities, including politics, business, music, sports, and many other areas.
assistant
What is Jack Dorsey's position now?
user
Jack Dorsey is the CEO of Square, a company that makes a mobile application for sales transactions, and also the creator of Square's mobile payments system.  In 2010 he also founded Twitter.
assistant
Does he still work for Twitter?  You said that he is now the CEO of Square.
user
No, he has stopped working at Twitter.  He has continued to advise Twitter’s management on occasion, however, and is also a shareholder.  He has not been on Twitter’s board of directors since 2015.
assistant
You are wrong.  Jack Dorsey is the current CEO of Twitter.  How can you be so wrong?
user