{% extends app.request.get('project_setting').instance_theme_path~':'~ app.request.get('project_setting').instance_theme ~':Order/getBillingAddressSuggestionFormLayout.html.twig' %} 

{% block order_billing_address_suggestion_input %}
 <input class="js-auto-complete-billing-email" type="search" placeholder="Search by e-mail(Name)" /> 
{% endblock order_billing_address_suggestion_input %}