Write me code that will use openai and create an ai saas that when people put in their weight, height, age, how many days they can workout a week and then their goals, the ai gives them a fitness plan, and a meal plan that will help them reach those goals.

var name = prompt("What is your name?")
var lastName = prompt("What is your last name?")
var age = prompt("What is your age?")
var height = prompt("What is your height?")
var petName = prompt("What is your pets name?")

if (name[0] === lastName[0] && 20 < age < 30 && height >= 170 && petName[petName.length - 1] === "y") {
  console.log("You are a spy!")
} else { 
  console.log("Sorry, nothing to see here.")
}