IConversationUpdateActivity update = message;
        using (var scope = Microsoft.Bot.Builder.Dialogs.Internals.DialogModule.BeginLifetimeScope(Conversation.Container, message))
        {
            var client = scope.Resolve<IConnectorClient>();
            if (update.MembersAdded.Any())
            {
                foreach (var newMember in update.MembersAdded)
                {
                    if (newMember.Id != message.Recipient.Id)
                    {
                        var reply = message.CreateReply();
                        reply.Text = $"Welcome {newMember.Name}!";
                        client.Conversations.ReplyToActivityAsync(reply);
                    }
                }
            }
        }