diff --git a/CMakeLists.txt b/CMakeLists.txt
index b680514..bc67c79 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -81,7 +81,7 @@ add_executable(autocat_gnome main.cpp
         gtkpp/MessageDialog.cpp
         gtkpp/MessageDialog.h
         gtkpp/Leaflet.cpp
-        gtkpp/Leaflet.h)
+        gtkpp/Leaflet.h gtkpp/Dialog.cpp gtkpp/Dialog.h gui/AddNumberDialog.cpp gui/AddNumberDialog.h)
 
 target_link_libraries(autocat_gnome ${GTK_LIBRARIES}
                                     ${GLIB_LIBRARIES}
@@ -91,7 +91,7 @@ target_link_libraries(autocat_gnome ${GTK_LIBRARIES}
                                     nlohmann_json::nlohmann_json
                                     ${FOLLY_DEP})
 
-set(XML gui/MainWindow.xml)
+set(XML gui/MainWindow.xml gui/AddNumberDialog.xml)
 
 list(APPEND CMAKE_MODULE_PATH "${PROJECT_SOURCE_DIR}/cmake/Modules")
 include(GlibCompileResourcesSupport)
diff --git a/gtkpp/Dialog.cpp b/gtkpp/Dialog.cpp
new file mode 100644
index 0000000..3438d6e
--- /dev/null
+++ b/gtkpp/Dialog.cpp
@@ -0,0 +1,5 @@
+//
+// Created by selim on 17.05.2022.
+//
+
+#include "Dialog.h"
diff --git a/gtkpp/Dialog.h b/gtkpp/Dialog.h
new file mode 100644
index 0000000..13a41fd
--- /dev/null
+++ b/gtkpp/Dialog.h
@@ -0,0 +1,19 @@
+//
+// Created by selim on 17.05.2022.
+//
+
+#ifndef AUTOCAT_GNOME_DIALOG_H
+#define AUTOCAT_GNOME_DIALOG_H
+
+#include "Window.h"
+
+namespace gtkpp {
+
+    class Dialog: public Window {
+    public:
+        using Window::Window;
+    };
+
+}
+
+#endif //AUTOCAT_GNOME_DIALOG_H
diff --git a/gtkpp/Window.cpp b/gtkpp/Window.cpp
index 0ea0761..120ec70 100644
--- a/gtkpp/Window.cpp
+++ b/gtkpp/Window.cpp
@@ -21,10 +21,10 @@ namespace gtkpp {
         _builder = nullptr;
     }
 
-    Window::Window(std::shared_ptr<Application> app, const char* resourceName) {
+    Window::Window(std::shared_ptr<Application> app, const char* resourceName, const char* id) {
         _app = app;
         _builder = gtk_builder_new_from_resource(resourceName);
-        _window = GTK_WINDOW(gtk_builder_get_object(_builder, "adw_main_window"));
+        _window = GTK_WINDOW(gtk_builder_get_object(_builder, id));
     }
 
     void Window::show() {
diff --git a/gtkpp/Window.h b/gtkpp/Window.h
index ec16039..c08127d 100644
--- a/gtkpp/Window.h
+++ b/gtkpp/Window.h
@@ -22,7 +22,7 @@ namespace gtkpp {
 
     public:
         Window(std::shared_ptr<Application> app, bool isAppWindow);
-        Window(std::shared_ptr<Application> app, const char* resourceName);
+        Window(std::shared_ptr<Application> app, const char* resourceName, const char* id);
         void show();
         void hide();
         void setTitle(const std::string& title);
diff --git a/gui/AddNumberDialog.cpp b/gui/AddNumberDialog.cpp
new file mode 100644
index 0000000..9c0b5cb
--- /dev/null
+++ b/gui/AddNumberDialog.cpp
@@ -0,0 +1,9 @@
+//
+// Created by selim on 17.05.2022.
+//
+
+#include "AddNumberDialog.h"
+
+AddNumberDialog::AddNumberDialog(): gtkpp::Window(nullptr, "/gui/AddNumberDialog.xml", "add_number_dialog") {
+
+}
diff --git a/gui/AddNumberDialog.h b/gui/AddNumberDialog.h
new file mode 100644
index 0000000..5b07748
--- /dev/null
+++ b/gui/AddNumberDialog.h
@@ -0,0 +1,16 @@
+//
+// Created by selim on 17.05.2022.
+//
+
+#ifndef AUTOCAT_GNOME_ADDNUMBERDIALOG_H
+#define AUTOCAT_GNOME_ADDNUMBERDIALOG_H
+
+#include "../gtkpp/Window.h"
+
+class AddNumberDialog: public gtkpp::Window {
+public:
+    AddNumberDialog();
+};
+
+
+#endif //AUTOCAT_GNOME_ADDNUMBERDIALOG_H
diff --git a/gui/AddNumberDialog.xml b/gui/AddNumberDialog.xml
new file mode 100644
index 0000000..dcd759d
--- /dev/null
+++ b/gui/AddNumberDialog.xml
@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<interface>
+    <object class="GtkDialog" id="add_number_dialog">
+        <child type="action">
+            <object class="GtkButton" id="button_cancel"/>
+        </child>
+        <child type="action">
+            <object class="GtkButton" id="button_ok">
+                <!--
+                <property name="can-default">True</property>
+                -->
+            </object>
+        </child>
+        <action-widgets>
+            <action-widget response="cancel">button_cancel</action-widget>
+            <action-widget response="ok" default="true">button_ok</action-widget>
+        </action-widgets>
+    </object>
+</interface>
\ No newline at end of file
diff --git a/gui/MainWindow.cpp b/gui/MainWindow.cpp
index 3c79cf4..88532a1 100644
--- a/gui/MainWindow.cpp
+++ b/gui/MainWindow.cpp
@@ -3,15 +3,18 @@
 //
 
 #include "MainWindow.h"
+#include "AddNumberDialog.h"
 #include "../gtkpp/HeaderBar.h"
 
 #include <iostream>
 
 MainWindow::MainWindow(std::shared_ptr<gtkpp::Application> app):
-    gtkpp::Window(std::move(app), "/gui/MainWindow.xml"),
+    gtkpp::Window(std::move(app), "/gui/MainWindow.xml", "adw_main_window"),
     _addNumberButton(_builder, "add_number_button") {
 
     _addNumberButton.onClick([this] {
         std::cout << "Add clicked" << std::endl;
+        auto dialog = std::make_unique<AddNumberDialog>();
+        dialog->show();
     });
 }