<link href="//maxcdn.bootstrapcdn.com/bootstrap/3.3.0/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css">
<script src="//maxcdn.bootstrapcdn.com/bootstrap/3.3.0/js/bootstrap.min.js"></script>
<script src="//code.jquery.com/jquery-1.11.1.min.js"></script>
<div class="container">
<div class="row">
<button type="button" class="btn btn-primary btn-lg" data-toggle="modal" data-target="#myModal">Call Us</button>
</div>
<div class="modal fade" id="myModal" tabindex="-1" role="dialog" aria-labelledby="myModalLabel" aria-hidden="true">
<div class="modal-dialog">
<div class="modal-content">
<div class="modal-header">
<button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">×</span></button>
<h4 class="modal-title" id="myModalLabel">Select Location</h4>
</div>
<div class="modal-body">
<select class="form-control" id="location-select">
<option value="">Select Location</option>
<option value="tel:12341234">Nebraska</option>
<option value="tel:12341234">California</option>
<option value="tel:12341234">Iowa</option>
</select>
</div>
<div class="modal-footer">
<button type="button" class="btn btn-default" data-dismiss="modal">Close</button>
<a href="#" class="sr-only" id="call-btn">Call Us</a>
</div>
</div>
</div>
</div>
</div>
