MultiTurn.cs

using GitHub.Copilot.SDK;

await using var client = new CopilotClient();
await client.StartAsync();

var session = await client.CreateSessionAsync(new SessionConfig
{
    Model = "gpt-4.1"
    OnPermissionRequest = PermissionHandler.ApproveAll,
});

Console.WriteLine("Chat with Copilot (type 'exit' to quit)\n");

while (true)
{
    Console.Write("You: ");
    var input = Console.ReadLine();

    if (string.IsNullOrWhiteSpace(input) || input == "exit")
        break;

    var response = await session.SendAndWaitAsync(new MessageOptions
    {
        Prompt = input
    });

    Console.WriteLine($"Copilot: {response?.Data.Content}\n");
}

await client.StopAsync();