[I’M NOT A NATIVE ENLGISH SPEAKER SO MY ENGLISH COULD BE BAD]

I’m making a simple chatbot system using batch script
and I brought some script from DR. SBAITSO by Creative labs for MS-DOS

    "input": "SAD",
    "output": 
      "HOW CAN I CHEER YOU UP",
      "DON'T WORRY, %opt2%, THINGS WILL GET BY",
      "ARE YOU AFFECTED BY SOME UNHAPPY EVENTS?",
      "WHAT BRINGS YOU TO SUCH UNHAPPY STATE?",
      "I EXTEND MY GREATEST CONDOLENCE",
      "WHO IS RESPONSIBLE FOR THIS?",
      "CHEER UP, %opt2%, THERE IS ALSO A WAY OUT"

    "input": "I'M %opt1%",
    "output": 
      "SINCE WHEN HAVE YOU BEEN %opt1%",
      "YOU THINK YOU ARE %opt1% , BUT IT'S ONLY AN ILLUSION",
      "TELL ME WHAT CAN STOP YOU FROM BEING %opt1%",
      "YOU ARE %opt1% , SO WHAT?",
      "I AM AMUSED THAT YOU ARE %opt1%",
      "I DIDN'T KNOW THAT YOU CAN BE %opt1%",
      "THE WORLD IS FULL OF POSSIBILITIES, BE HAPPY WITH WHAT YOU ARE",
      "WHAT MAKES YOU %opt1%",
      "DID YOU COME TO ME BECAUSE YOU ARE %opt1%",
      "HOW LONG HAVE YOU BEEN %opt1%",
      "DO YOU BELIEVE IT IS NORMAL TO BE %opt1%",
      "DO YOU ENJOY BEING %opt1%",
      "YOU ARE WHAT YOU ARE %opt2%",
      "YOU ARE JUST %opt1% ? WHAT ABOUT ME?",
      "YOU WANTED TO BE %opt1% SO THAT YOU CAN TALK TO ME?",
      "I THINK I AM %opt1% TOO"

    "input": "YOU'RE %opt1%",
    "output": 
      "DOES IT PLEASE YOU TO BELIEVE THAT I AM %opt1%",
      "I THINK YOU ARE ALSO %opt1%",
      "WHY DO YOU WISH THAT I AM %opt1%",
      "IF I AM %opt1% THEN YOU MUST BE OUT OF YOUR MIND",
      "WHEN I AM %opt1% , YOU ARE GOING TO REGRET IT",
      "WHAT WILL HAPPEN WHEN I AM %opt1%",
      "DO YOU SOMETIMES WISH YOU WERE %opt1%",
      "WHAT MAKES YOU THINK THAT I AM %opt1%",
      "PERHAPS YOU WOULD LIKE TO BE %opt1%"

The batch file will ask a question through
set strr /p=TYPE within the iteration command, and if the question contains the word “input” =, I want it to randomly output one of the sentences “output” (I don’t care about the order)

Hope you see the above code and know what %opt1% and so on are doing
If you ask it “I’m sad because Jaden kicked me”
“sad” should be stored in %opt1%
And the sentence after that should be stored in %opt2%

Yes I want to copy MS DOS version similarly to batch file

I don’t know exactly what I’m supposed to ask and I know a lot of people will hate this question but that’s why I ask you I’m not that good at writing batch scripts

I tried almost nothing…