Can not assign task to a team entity

if(context.InputParameters.Contains("Target") && context.InputParameters["Target"] is Entity)
            {
                Entity travelDetail = (Entity)context.InputParameters["Target"];

                if(travelDetail.LogicalName != "gg_traveldetail") { return; }

                try
                {
                    QueryByAttribute teamQuery = new QueryByAttribute("team");
                    teamQuery.AddAttributeValue("name", "Travel Consultants");

                    EntityCollection retrievedTeam = service.RetrieveMultiple(teamQuery);

                    Entity travelConsultantTeam = (Entity)retrievedTeam.Entities[0];

                    Guid travelconId = travelConsultantTeam.Id;


                    Entity task = new Entity("task");

                    task.Attributes["subject"] = "New Travel Booking Created";
                    task.Attributes["ownerid"] = new EntityReference(travelConsultantTeam.LogicalName, travelconId);
                    task.Attributes["description"] = "A new travel booking has been created for a staffing role.";

                    if (context.OutputParameters.Contains("id"))
                    {
                        Guid regardingobjectid = new Guid(context.OutputParameters["id"].ToString());
                        string regardingobjectidType = "gg_traveldetail";

                        task.Attributes["regardingobjectid"] =
                        new EntityReference(regardingobjectidType, regardingobjectid);
                    }

                    service.Create(task);