<!-- MainWindow.xaml -->
<Window xmlns:syncfusion="clr-namespace:Syncfusion.UI.Xaml.Chat;assembly=Syncfusion.SfChat.WPF">
    <Grid>
        <Grid.DataContext>
            <local:ViewModel/>
        </Grid.DataContext>
        <syncfusion:SfAIAssistView
            Messages="{Binding Chats}"
            CurrentUser="{Binding CurrentUser}"
            Suggestions="{Binding Suggestions}"
            ShowTypingIndicator="{Binding ShowTypingIndicator}"
            TypingIndicator="{Binding TypingIndicator}" />
    </Grid>
</Window>

// ViewModel.cs
public class ViewModel : INotifyPropertyChanged
{
    public ObservableCollection<object> Chats { get; set; }
    public Author CurrentUser { get; set; }

    public ViewModel()
    {
        Chats = new ObservableCollection<object>();
        CurrentUser = new Author { Name = "User" };
        Chats.Add(new TextMessage
        {
            Author = CurrentUser,
            Text = "Hello, how can you help me?"
        });
        Chats.Add(new TextMessage
        {
            Author = new Author { Name = "AI" },
            Text = "I can answer questions and help with tasks."
        });
    }
}

// Subscribe to CollectionChanged on Chats
Chats.CollectionChanged += async (s, e) =>
{
    if (e.Action == NotifyCollectionChangedAction.Add
        && e.NewItems[0] is TextMessage msg
        && msg.Author.Name == CurrentUser.Name)
    {
        ShowTypingIndicator = true;
        var reply = await aiService.GetResponseAsync(msg.Text);
        Chats.Add(new AIMessage { Author = aiAuthor, Text = reply });
        ShowTypingIndicator = false;
    }
};

Suggestions = new List<string> { "Tell me more", "Give an example", "Summarize" };

<syncfusion:SfAIAssistView PromptRequest="OnPromptRequest" />

private void OnPromptRequest(object sender, PromptRequestEventArgs e)
{
    // e.InputMessage contains the user's text
    e.Handled = true; // Prevent default processing
}