$('#chatbot').dialog({
    autoOpen: false,
    height: 500,
    width: 450,
    position: {my: 'right bottom', at: 'right-5 bottom-5', of: 'body'},
    close:  () => { $('#help-div').show();}
});

$('#help').click(() => {
    $('#chatbot').dialog('open')
    $('#help-div').hide();
} );