public AutoCompleteResponse SuggestCustomer(string query, int page, int pageSize) { var response = EsClient.Search <Customer>(s => s.Index("customer") .Suggest(su => su.Completion("suggestions", c => c.Field(t => t.EmailSuggest).Prefix(query).Fuzzy(f => f.Fuzziness(Fuzziness.Auto) ) ) ) ); var suggestions = response.Suggest["suggestions"]; AutoCompleteResponse autoCompleteResponse = new AutoCompleteResponse { text = suggestions[0].Text, customerDetails = new List <CustomerDetails>() }; foreach (var option in suggestions[0].Options) { autoCompleteResponse.customerDetails.Add(new CustomerDetails { Email = option.Text, Details = option.Source }); } return(autoCompleteResponse); }