AMP contact form

amp_contact_form.html

 <form 
     action-xhr="/scripts/contact_process.php" 
     verify-xhr="/scripts/contact_process.php"
     method="post" 
     class="detailed_contact_form "
     custom-validation-reporting="show-all-on-submit"
     > 
        <fieldset class="user-valid valid">
           <legend>
              <span> Schedule an appointment</span>
           </legend>
           <div class="form-body">
              <div class="form-group">   
               <div class="form-group"> 
                    <div class="form-group"> 
                 <label for="email">Email  </label> 
                 <input type="text" required name="email" id="email"  value="example@example.com"class="form-input string-entry">
              </div>
                 <label for="name">Name  </label> 
                 <input type="text" required  value="Cindy"  name="name" id="name"  class="form-input string-entry">
              </div>
              <div class="form-group">  
                 <label for="phone">Phone </label>  
                 <input type="tel" required name="phone" id="phone" value="123-345-6789" class="form-input string-entry">
              </div>
                 <div class="form-group">  
                 <label for="message">Message </label>  
                 <textarea name="message" id="message" required class="textarea" >I want to schedule an appointment for my dragon Skippy, for tomorrow 10AM</textarea>
              </div>
              <div class="form-group button-holder">
                 <input type="submit" class="button" value="Send appointment!">
              </div>
           </div>
            
           <div submit-error>
              <template type="amp-mustache">
                  {{#verifyErrors}}
                      <p>{{message}}</p>
                  {{/verifyErrors}}
                  {{^verifyErrors}}
                      <p>
                        Can't submit form. Please email at example@example.com
                        or call at 123-456-6780
                      </p>
                  {{/verifyErrors}}
              </template>
          </div>
          <div submit-success> 
            <template type="amp-mustache">
              Message Sent!
            </template>
             </div>
         
        </fieldset>
    
     </form>