Conflito AutoComplete e DatePicker

<link href="functions/jquery-autocomplete/jquery.autocomplete.css" rel="stylesheet" type="text/css" />
<link href="http://code.jquery.com/ui/1.9.0/themes/base/jquery-ui.css" rel="stylesheet" />

<script src="http://code.jquery.com/ui/1.9.0/jquery-ui.js"></script>
<script type="text/javascript" src="functions/jquery-1.9.1.min.js"></script>
<script type="text/javascript" src="functions/jssor.js"></script>
<script type="text/javascript" src="functions/jssor.slider.js"></script>
<script type="text/javascript" src="functions/jquery-autocomplete/lib/jquery.js"></script>
<script type="text/javascript" src="functions/jquery-autocomplete/lib/jquery.bgiframe.min.js"></script>
<script type="text/javascript" src="functions/jquery-autocomplete/lib/jquery.ajaxQueue.js"></script>
<script type="text/javascript" src="functions/jquery-autocomplete/lib/thickbox-compressed.js"></script>
<script type="text/javascript" src="functions/jquery-autocomplete/jquery.autocomplete.js"></script>

<!-- SCRIPT DO BANNER DE TRANSIÇÃO -->	
    <script>
		var a = jQuery.noConflict()
		var b = jQuery.noConflict()
		var c = jQuery.noConflict()

		
        a(document).ready(function ($) {
            var options = {

                $AutoPlay: true,        
                $DragOrientation: 1                                
            };

            var jssor_slider1 = new $JssorSlider$("slider1_container", options);

        });
 
<!-- INICIO SCRIPT PARA AUTO COMPLETAR A BUSCA DE CIDADES-->    
		
        b(document).ready(function(){
            b("#tx_origem").autocomplete("completar.php", {
                width:310,
                selectFirst: false
            });
        });

       b(document).ready(function(){
            b("#tx_destino").autocomplete("completar.php", {
                width:310,
                selectFirst: false
            });
        });

<!-- FIM SCRIPT PARA AUTO COMPLETAR A BUSCA DE CIDADES-->
<!-- INICIO SCRIPT DATEPICKER -->						
		$(document).ready(function(){
			$("#tx_dataida").datepicker({
				
				numberOfMonths: 2,
				dateFormat: 'dd/mm/yy',
        		dayNames: ['Domingo','Segunda','Terça','Quarta','Quinta','Sexta','Sábado','Domingo'],
				dayNamesMin: ['D','S','T','Q','Q','S','S','D'],
				dayNamesShort: ['Dom','Seg','Ter','Qua','Qui','Sex','Sáb','Dom'],
				monthNames: ['Janeiro','Fevereiro','Março','Abril','Maio','Junho','Julho','Agosto','Setembro','Outubro','Novembro','Dezembro'],
				monthNamesShort: ['Jan','Fev','Mar','Abr','Mai','Jun','Jul','Ago','Set','Out','Nov','Dez']
				
			});
		});
		$(document).ready(function(){
			$("#tx_datavolta").datepicker({
				
				numberOfMonths: 2,
				dateFormat: 'dd/mm/yy',
        		dayNames: ['Domingo','Segunda','Terça','Quarta','Quinta','Sexta','Sábado','Domingo'],
				dayNamesMin: ['D','S','T','Q','Q','S','S','D'],
				dayNamesShort: ['Dom','Seg','Ter','Qua','Qui','Sex','Sáb','Dom'],
				monthNames: ['Janeiro','Fevereiro','Março','Abril','Maio','Junho','Julho','Agosto','Setembro','Outubro','Novembro','Dezembro'],
				monthNamesShort: ['Jan','Fev','Mar','Abr','Mai','Jun','Jul','Ago','Set','Out','Nov','Dez']
				
			});
		});
		
</script>
<!-- FIM DO SCRIPT DATEPICKER -->