Use button for input

Here's an example from the Suggested actions sample.

// Creates and sends an activity with suggested actions to the user. When the user
// clicks one of the buttons the text value from the "CardAction" will be
// displayed in the channel just as if the user entered the text. There are multiple
// "ActionTypes" that may be used for different situations.
private static async Task SendSuggestedActionsAsync(ITurnContext turnContext, CancellationToken cancellationToken)
{
    var reply = MessageFactory.Text("What is your favorite color?");

    reply.SuggestedActions = new SuggestedActions()
    {
        Actions = new List<CardAction>()
        {
            new CardAction() { Title = "Red", Type = ActionTypes.ImBack, Value = "Red", Image = "https://via.placeholder.com/20/FF0000?text=R", ImageAltText = "R" },
            new CardAction() { Title = "Yellow", Type = ActionTypes.ImBack, Value = "Yellow", Image = "https://via.placeholder.com/20/FFFF00?text=Y", ImageAltText = "Y" },
            new CardAction() { Title = "Blue", Type = ActionTypes.ImBack, Value = "Blue", Image = "https://via.placeholder.com/20/0000FF?text=B", ImageAltText = "B" },
        },
    };
    await turnContext.SendActivityAsync(reply, cancellationToken);
}

Here's an example from the Suggested actions sample.

/**
 * Send suggested actions to the user.
 * @param {TurnContext} turnContext A TurnContext instance containing all the data needed for processing this conversation turn.
 */
async sendSuggestedActions(turnContext) {
    const cardActions = [
        {
            type: ActionTypes.PostBack,
            title: 'Red',
            value: 'Red',
            image: 'https://via.placeholder.com/20/FF0000?text=R',
            imageAltText: 'R'
        },
        {
            type: ActionTypes.PostBack,
            title: 'Yellow',
            value: 'Yellow',
            image: 'https://via.placeholder.com/20/FFFF00?text=Y',
            imageAltText: 'Y'
        },
        {
            type: ActionTypes.PostBack,
            title: 'Blue',
            value: 'Blue',
            image: 'https://via.placeholder.com/20/0000FF?text=B',
            imageAltText: 'B'
        }
    ];

    var reply = MessageFactory.suggestedActions(cardActions, 'What is the best color?');
    await turnContext.sendActivity(reply);
}

Here's an example from the Suggested actions sample.

/**
 * Creates and sends an activity with suggested actions to the user. When the user
 * clicks one of the buttons the text value from the "CardAction" will be
 * displayed in the channel just as if the user entered the text. There are multiple
 * "ActionTypes" that may be used for different situations.
 */
private static CompletableFuture<Void> sendSuggestedActions(TurnContext turnContext) {
    Activity reply = MessageFactory.text("What is your favorite color?");

    CardAction redAction = new CardAction();
    redAction.setTitle("Red");
    redAction.setType(ActionTypes.IM_BACK);
    redAction.setValue("Red");
    redAction.setImage("https://via.placeholder.com/20/FF0000?text=R");
    redAction.setImageAltText("R");

    CardAction yellowAction = new CardAction();
    yellowAction.setTitle("Yellow");
    yellowAction.setType(ActionTypes.IM_BACK);
    yellowAction.setValue("Yellow");
    yellowAction.setImage("https://via.placeholder.com/20/FFFF00?text=Y");
    yellowAction.setImageAltText("Y");

    CardAction blueAction = new CardAction();
    blueAction.setTitle("Blue");
    blueAction.setType(ActionTypes.IM_BACK);
    blueAction.setValue("Blue");
    blueAction.setImage("https://via.placeholder.com/20/0000FF?text=B");
    blueAction.setImageAltText("B");

    SuggestedActions actions = new SuggestedActions();
    actions.setActions(Arrays.asList(redAction, yellowAction, blueAction));
    reply.setSuggestedActions(actions);
    return turnContext.sendActivity(reply).thenApply(sendResult -> null);
}

Here's an example from the Suggested actions sample.

async def _send_suggested_actions(self, turn_context: TurnContext):
    """
    Creates and sends an activity with suggested actions to the user. When the user
    clicks one of the buttons the text value from the "CardAction" will be displayed
    in the channel just as if the user entered the text. There are multiple
    "ActionTypes" that may be used for different situations.
    """

    reply = MessageFactory.text("What is your favorite color?")

    reply.suggested_actions = SuggestedActions(
        actions=[
            CardAction(
                title="Red",
                type=ActionTypes.im_back,
                value="Red",
                image="https://via.placeholder.com/20/FF0000?text=R",
                image_alt_text="R",
            ),
            CardAction(
                title="Yellow",
                type=ActionTypes.im_back,
                value="Yellow",
                image="https://via.placeholder.com/20/FFFF00?text=Y",
                image_alt_text="Y",
            ),
            CardAction(
                title="Blue",
                type=ActionTypes.im_back,
                value="Blue",
                image="https://via.placeholder.com/20/0000FF?text=B",
                image_alt_text="B",
            ),
        ]
    )

    return await turn_context.send_activity(reply)