I love getting some exercise and playing tennis. Do you have a favorite sport?
Tennis is also my favorite sport. Do you like to play singles or teams of two?
I like to play teams of two! It's a lot more social and adds a nice dynamic to the game. How about you?
Depends on my mood. If it's casual I like teams. But if I'm pushing my self I prefer to play one on one. 
Cool. Have you ever played squash? It's pretty similar to tennis.
Is that where you play with four people total and a little rubber ball? 
You don't need 4 people.. you can play singles also, but yes! It's with a hard rubber ball. It can be quite fun! Although tennis is definitely my favorite. 
I'd love to try it some times. Is it an Olympic sport like tennis? 
I have no idea. It's common at community centers or large gym facilities. I've never seen it in the Olympics. 
I'm from Birmingham, England the actual home to modern day Tennis so I focus on it a lot.