How to ask the user for some information while executing a plan? #6014

I'm trying out a FunctionCallingStepwisePlanner.

var _kernel = Kernel.CreateBuilder().AddOpenAIChatCompletion("gpt-3.5-turbo", openAiApiKey, openAiOrg).Build();
_kernel.Plugins.AddFromType<CinemaPlugin>();

while (true)
{
    Console.WriteLine("User > ");

    var userinput = Console.ReadLine();
    if (userinput == "exit")
        break;

#pragma warning disable SKEXP0060 // Type is for evaluation purposes only and is subject to change or removal in future updates. Suppress this diagnostic to proceed.

    var planner = new FunctionCallingStepwisePlanner(new FunctionCallingStepwisePlannerOptions()
    {
        MaxIterations = 1
    });

    var result = await planner.ExecuteAsync(_kernel, userinput);

    var content = result.FinalAnswer;

    Console.WriteLine($"Assistant > {content}");

#pragma warning restore SKEXP0060 // Type is for evaluation purposes only and is subject to change or removal in future updates. Suppress this diagnostic to proceed.
}

I have a plugin with a few methods that will be used to make a movie reservation.
The generated plan is ok:

Original request: how to make a movie reservation?

You are in the process of helping the user fulfill this request using the following plan:

Use CinemaPlugin-GetAvailableMovies function to get the list of available movies for the desired date.
Use CinemaPlugin-MakeReservation function to prepare a reservation for the selected movie, date, and number of seats.
Confirm the reservation by using CinemaPlugin-ConfirmReservation function with the selected movie, date, and number of seats.
Send the final answer to the user confirming the successful reservation using UserInteraction-SendFinalAnswer function.

The user will ask you for help with each step.

As you can see I have ask it how to make a reservation and it figured out how to do it but the FinalAnswer of the planner is an empty string.
What can I do to make it ask me for an input?
Since I have not provided a date for a movie it should ask me for a date. When the user provides a date it can call GetAvailableMovies function to get a list of the movies.
Now the user should pick one from the list. Since we have a date and a movie it can try to make a resevation etc.

Is this kind of scenario possible with planners?