how to create a proper view in controller passing the data

public async Task Index()

{

// var model = new RootObject();

if (Request.HttpMethod == "POST")

{

string Origin = Request.Form["Origin"];

string Destination = Request.Form["Destination"];

string dateString = Convert.ToDateTime(Request.Form["Departure"]).ToString("yyyy-MM-dd");

string dateStringR = Convert.ToDateTime(Request.Form["Return"]).ToString("yyyy-MM-dd");

WebClient datawebclient = new WebClient();

string url = "https://" + "api.test.sabre.com/v1/shop/flights?origin=" + Origin + "&destination=" + Destination + "&departuredate=" + dateString + "&returndate=" + dateStringR + "&onlineitinerariesonly=N&limit=10&offset=1&eticketsonly=N&sortby=totalfare&order=asc&sortby2=departuretime&order2=asc&pointofsalecountry=US";

string data = string.Empty;

string AccessToken = "T1RLAQLHmr9Bsl3qBQiyJmYbAAjGU29q4RDUT9wV+XIfFPei6krNZto5AACgbtAZFC3fGLP5b+2AWt4EMH9trBd6lovskG1RKgBZFXbJWXZ3ejoF5V8kKouUGKPelL+WF52pzfRNMloDtR3/shpHbS+jF37TERm4LsvSBus3gkfs7jox3NjiClITbeII/G8vX17zPJfO+EwetlGKApl9Z2WiRqq/Cc+WFFw3E0K90z+KkbqISiGY1XQlieKyqrVwTwwFkcNLQ1xEZAeagg**";

using (var client = new HttpClient())

{

client.DefaultRequestHeaders.Add("Authorization", "Bearer " + AccessToken);

data = await client.GetStringAsync(url);

}

var info = JsonConvert.DeserializeObject(data);

if (info != null)

{

List firstName = info.PricedItineraries;

foreach (var value in firstName)

{

int seqNo = value.SequenceNumber;

var AirIT = value.AirItinerary;

}

ViewBag.data = firstName;

return View();

}

// ViewBag.data =data ;

}

return View();

}

public class RootObject

{

public List PricedItineraries { get; set; }

public string ReturnDateTime { get; set; }

public string DepartureDateTime { get; set; }

public string DestinationLocation { get; set; }

public string OriginLocation { get; set; }

public List Links { get; set; }

}

@model IEquatable< MvcApplication2.Models.RootObject>

@{

ViewBag.Title = "Index";

}

Enter Details

@ViewBag.url

@ViewBag.data