Here is the Contact Form 7 template and source code for the Contact form.

To edit this form go to Contact> then edit your targeted form

<div class="row">
    <div class="col-lg-6">
        <div class="form-group">
            [text* name id:name class:form-control placeholder "Your Name"]
        </div>
    </div>
    <div class="col-lg-6">
        <div class="form-group">
           [email* email id:email class:form-control placeholder "Your Email"]
        </div>
    </div>
    <div class="col-lg-6">
        <div class="form-group">
            [text* phone_number id:phone_number class:form-control placeholder "Your Phone"]
        </div>
    </div>
    <div class="col-lg-6">
        <div class="form-group">
            [text* msg_subject id:msg_subject class:form-control placeholder "Your Subject"]
        </div>
    </div>
    <div class="col-lg-12">
        <div class="form-group">
            [textarea* message id:message class:form-control placeholder "Your Message"]
        </div>
    </div>
    <div class="col-lg-12">
        <div class="agree-label"><input type="checkbox" id="chb1"><label for="chb1">Accept <a href="http://localhost/wordpress/neon/terms-conditions/">Terms & Conditions</a> And <a href="http://localhost/wordpress/neon/privacy-policy/">Privacy Policy.</a></label>
        </div>
    </div>
    <div class="col-lg-12 col-md-12">
        [submit class:default-btn "Send Message"]
    </div>
</div>