Can you play tennis ?
neutral
user
Yes , I can .
neutral
assistant
It is interesting , isn't it ?
neutral
user
Yes , it's very interesting .
neutral
assistant
Can you teach me ?
neutral
user
Sure . Take the tennis racket . Now , throw the ball up , and hit it with the racket . Like this .
neutral
assistant
Let me try . Oh , I missed !
neutral
user
Throw the ball up high .
neutral
assistant
High ?
neutral
user
Yes , very high . Over your head . Then you will have time to hit the ball .
neutral
assistant
Oh ! I hit it .
happiness
user
Well done !
happiness
assistant