What is the proper way using autocomplete?

 $('#search').autocomplete({
                source: function (request, response) {                   
                    var autocompleteUrl = '~/BookingManagement/AutoCompleteCustomer';                
                    $.ajax({
                        url: autocompleteUrl,
                        type: 'GET',
                        cache: false,
                        dataType: 'json',
                        success: function (json) {                          
                            response($.map(json, function (data, id) {
                                return {                                
                                    value: data.LastName
                                };                            
                            }));
                        },
                        error: function (xmlHttpRequest, textStatus, errorThrown) {
                            console.log('some error occured', textStatus, errorThrown);
                        }
                    });
                },
                minLength: 2,
                select: function (event, ui) {
                    alert('you have selected ' + ui.item.label + ' ID: ' + ui.item.value);
                    $('#search').val(ui.item.label);
                    return false;
                }
        });


2. My Controller

   [HttpGet]  
        public async Task<iactionresult> AutoCompleteCustomer(int id)
        {
            try
            {
                List<getcustomermasterfiletbl> CodeListing = new List<getcustomermasterfiletbl>();
                using (var httpClient = new HttpClient())
                {
                    using (var response = await httpClient.GetAsync(apiBaseUrl + "/AutoCompleteCustomer?id=" + id))
                    {
                        string apiResponse = await response.Content.ReadAsStringAsync();
                        CodeListing = JsonConvert.DeserializeObject<list<getcustomermasterfiletbl>>(apiResponse)!;
                    }
                }
                var model = new GetCustomerMasterFileTbl
                {
                    CustomerMasterFileJVM = CodeListing,
                     LastName = CodeListing.FirstOrDefault()?.LastName,
                };

              

                return View(model);
            }
            catch (ArgumentException ex)
            {
                Console.WriteLine($"Processing failed: {ex.Message.ToString()}");
                throw;
            }
        }
    }