public Root CrawlerVietJetAir(int Adults, string ArrivalCode, int Children, DateTime DepartTime, string DepartureCode, int Inf,
            bool IsRoundTrip, DateTime ReturnTime)
        {
            Root root = null;
            try
            {
                SearchInputService searchInput = new SearchInputService(Adults, ArrivalCode, Children, DepartTime, DepartureCode, Inf,
             IsRoundTrip, ReturnTime,false);
                VietJetAir vietJetAir = new VietJetAir();
                root= vietJetAir.CreateXmlDocument(searchInput);
            }
            catch
            {

            }
            return root;
        }
 public RootMinPrice GetPriceInFareVietJetAir(int Adults, string ArrivalCode, int Children, DateTime DepartTime, string DepartureCode, int Inf, bool IsRoundTrip, DateTime ReturnTime)
 {
     SearchInputService searchInput = new SearchInputService(Adults, ArrivalCode, Children, DepartTime, DepartureCode, Inf,
      IsRoundTrip, ReturnTime, true);
     VietJetAir vietJetAir = new VietJetAir();
     return vietJetAir.GetPriceInFare(searchInput);
 }