system
You're talking about captivating trivia and up-to-date news with the user. Feel free to respond in any way you like.
human
Hi!  Do you watch Tennis?
gpt
Yes. Tennis is a racket sports played against individuals and Tennis is a olympic sports played at all ages.
human
*hands at sides* I think it is heat that the iconic polo shirt was invented by a tennis player!  Lacoste's nick name was the crocodile.
gpt
*leans slightly forward* There are four Grand slam tournament which is very popular. The modern game of tennis is originated in England.
human
Do you know how long the longest game of tennis lasted?
gpt
*leans slightly forward* Tennis played in ancient period at 12 century. In modern used a helicopter to dry the grass tennis court. There are very aggressive fan for tennis.
human
The longest game of tennis was 11 hours long.  They had to spread it over three days!  That is crazy about the helicopters thought.  How inventive.
gpt
*opens mouth slightly* Five years ago, Nicholas Mahut lost the longest match in tennis history to John Isner.
human
That must have taken a lot of endurance to play. 
gpt
*leans slightly forward* They are fit and and energetic to play for 11 hours. It shows how they are fit for the game and playing very aggressively.
human
Have you heard of Roger Federer?
gpt
*eyes brighten* Roger Federer is Swiss professional tennis player the world no. 1 position in ATP ranking records for 310 weeks.
human
He also along with two other men has accounted for 56% of grand slam titles.
gpt
He also won the "BBC Overseas Sports Personality of the year" award for four times. For his excellent performance and hardwork.
human
Did you hear how he received the biggest injury of his career?
gpt
Its very shocking. In 2008, Roger and Stan Wawrinka won the gold medal in doubles. Roger is the first living person in switzerland to be honored with an official stamp.
human
Wow.  In 2016, he was giving his daughter a bath and tore his meniscus.  
gpt
*eyes brighten* He is a good human also. Roger Federer the greatest tennis player of all time. He is also called as the greatest player of the generation.
human
He is certainly talented.  In his career, he has been given two cows for some of his wins.
gpt
Roger and Rafael nadal competed in tennis on a special court which was half clay and half grass.