How to delete a Dialog from the data recording process

I have a legacy system of record control and it is working perfectly with regards to recording the data in a bank, but I am trying to adapt it and I am not getting it. The current script shows dialog more, I only need to show only dialog which informs if the record was inserted successfully or if an error occurred, I would like to delete the first one that is presented.

I'm using this project: Bootstrap 3 Dialog

I already have this:

    function DlgInserirFase() {
    //Dialog de inserção de dados   

    BootstrapDialog.show({
        //title: 'Fase',
        // message: $('<div id="divNotas"></div>').load('frmMural.html'),
        closable: false,

        buttons: [{

            //icon: 'glyphicon glyphicon-send',
            //label: 'Gravar',
            //cssClass: 'btn-primary',
            //autospin: true,

            action: function(dialogRef){

                //Chama o validate do formulário
                // $('#frmFase').validate();
                //if ($('#frmFase').valid() == true) {
                    //dialogRef.enableButtons(false);
                    // dialogRef.setClosable(false);

                    var params = {
                        Operacao:   'Inserir',
                        dTipoFase:  $('#dTipoFase').val(),
                        dData:      $('#dData').val(),
                        dHora:      $('#dHora').val(),
                        dDescricao: $('#dDescricao').val(),
                        IdContrato: $("input[name=IdContrato]").val(),                          
                    };

                    // GravaFase(params);

                    $.post(
                        'ProcessoFase.php',
                        params,
                        function( json, textStatus, jQxhr ){
                            if (json.status != "ERRO") {
                                var dialogInstance = BootstrapDialog.show({
                                    title: 'SUCESSO',
                                    type: BootstrapDialog.TYPE_SUCCESS,
                                    message: json.msg,
                                    closable: false,
                                    buttons: [
                                        {
                                            label: 'Fechar',
                                            cssClass: 'btn-success',
                                            action: function(dialogRef){
                                                dialogRef.close();
                                                location.reload();
                                            }
                                        }
                                    ]   
                                }); 
                            } else {    

                                var dialogInstance = BootstrapDialog.show({
                                    title: 'ERRO',
                                    type: BootstrapDialog.TYPE_DANGER,
                                    message: json.msg,
                                    closable: false,
                                    buttons: [
                                        {
                                            label: 'Fechar',
                                            cssClass: 'btn-danger',
                                            action: function(dialogRef){
                                                dialogRef.close();
                                                // location.reload();
                                            }
                                        }
                                    ]                                       
                                }); 
                            }
                        },
                        'json'
                    )
                    .fail(function( jqXhr, textStatus, errorThrown ){
                        try {
                            var json = $.parseJSON(jqXHR.responseText);
                            var dialogInstance = BootstrapDialog.show({
                                title: 'ERRO',
                                type: BootstrapDialog.TYPE_DANGER,
                                message: json.msg
                            }); 
                        } catch(e) { 
                            var dialogInstance = BootstrapDialog.show({
                                title: 'ERRO',
                                type: BootstrapDialog.TYPE_DANGER,
                                message: json.msg
                            }); 
                        }
                    });

                    dialogRef.close();
                //}
            }
        },

        {
            label: 'Cancelar',
            cssClass: 'btn-danger',
            action: function(dialogRef){
                dialogRef.close();
            }
        }]
    });
}