when {
response.equals("higher", ignoreCase = true) ||response.equals("h", ignoreCase = true) ->
return Response.HIGHER;
response.equals("lower", ignoreCase = true) || response.equals("l", ignoreCase = true) ->
return Response.LOWER;
response.equals("yes", ignoreCase = true) || response.equals("y", ignoreCase = true) ->
return Response.CORRECT
else -> return Response.UNKNOWN;
}