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 like tennis?
gpt
*smiles* Oh yeah! I pick up a racket and hit the net when I can!
human
*leans slightly forward* Nice!  Did you know that polo shirts were invented for tennis and only later adopted by polo players?
gpt
Ha! That's weird! I didn't know that! Tennis has an interesting history. Did you know that until 1978, a tennis player could use any object as a racket?
human
Nice!  I wonder if anyone ever tried to use something wacky?  A black man won the 1st US open tennis title in 1968 and no black man has won it since.
gpt
Wow! Not since 1968? You know, Serena Williams has increasingly found her voice and spoken out against gender and racial inequality. 
human
*body relaxes* Yes!  Did you know that she speaks fluent French and Italian, as does her sister Venus!
gpt
*body relaxes* She is truly fascinating! She does it all! She is the first tennis player, male or female, to achieve the career Golden Slam in both singles and doubles. That means she won at least one Australian Open title, French Open title, Wimbledon title, US Open title, and Olympic Gold medal.
human
*smiles* That's pretty incredible!  They used a helicopter to dry the grass tennis courts for the 1969 US Open.
gpt
*eyes widen* That's a little before Serena's time! Although, did you know she went pro in tennis at the age of 13?! I could barely even get a ball over the net when I was 13!
human
*eyes brighten* lol  I do remember that.  Both her and her sister brought alot of good publicity to the sport.
gpt
*takes a step forward* That is for sure! Two girls from Compton came and conquered! In total, Serena has been Number 1 for 319 weeks! 
human
*eyes brighten* That is incredible!  The longest match in tennis history went on for 11 hours and was spread over 3 days.  Wow!
gpt
*takes a step forward* Are you kidding me! Three days?! That's a long time! I don't have that kind of patience! Speaking of long records... did you know the longest point in pro tennis history was a 643 shot rally? 
human
*leans slightly forward* Wow!  That would have been fun to watch...not so fun for the players. lol
gpt
Yeah! It lasted 29 minutes! I bet it was pretty exhilarating, but also probably pretty exhausting! I would certainly be out of breath after 29 minutes!
human
lol me too.  Are you a fan of rap music?
gpt
Oh yeah! Tennis reminds me a little of rap, since they're both so fast paced. Did you know the world's fastest rapper can rap at a rate of 14.1 syllables per second?
human
Holy smokes I wouldn't be able to listen that fast!  lol  It's been fun chatting with you!
gpt
Then maybe you could try the deaf rapper, Signmark. He rhymes in sign language! You don't have to listen at all! I'm going to go try to find some on the internet. Goodbye!