Yes, I got it!
For example:
Entity 1 - Products - rice, bread,..
Entity 2 - Money - $1000, $5000,...
Question 1 - What is the product? (entity 1)
Question 2- Ok, how many you will expend? (entity 2)
Message - Thanks, you selected VarProduct and VarMoney
Bot: "What is the product? "
User: "I want a rice less than $1000"
Bot: "Thanks, you selected rice and $1000"
The PVA bot will recognize these two questions.
@Anonymous