Where i am doing mistake in this script?

My basic script quiz game... i am new

problem: i made it myself.. saved it as .bat (made with notepad++) now when i execute it first section comes (:MENU) one. when i press 1 and press enter bang in suddenly closes off!.. sorry for bad english please help!

script:

@echo off

:MENU

echo This is my first game ever

echo press 1 to start

set/p=Command:

if %input%===1 goto :L1

:L1

echo lemon have____Test

echo 1:bitter 2:sweet :****

set/p=Command:

if %input%===1 goto :L2

if %input%===2 goto :FAIL

if %input%===3 goto :FAIL

:L2

echo facebook was made by?

echo 1)m. zukerberg 2)Steve Jobs 3)M.duckerberg

set/p=Command

if %input%===1 goto :WIN

if %input%===2 goto :FAIL

if %input%===3 goto :FAIL

:WIN

echo yay you won press 1 to restart

set/p=Command

if %input%===1 goto :L1

:FAIL

echo lol you failed press 1 to restart

set/p=Command:

if %input%===1 goto :L1