diff --git a/src/invitationdialog.h b/src/invitationdialog.h
new file mode 100644
index 0000000..bcfeaa6
--- /dev/null
+++ b/src/invitationdialog.h
@@ -0,0 +1,55 @@
+/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil -*- */
+/*
+ * Copyright (c) 2013, Regents of the University of California
+ *                     Yingdi Yu
+ *
+ * BSD license, See the LICENSE file for more information
+ *
+ * Author: Yingdi Yu <yingdi@cs.ucla.edu>
+ */
+
+#ifndef INVITATIONDIALOG_H
+#define INVITATIONDIALOG_H
+
+#include <QDialog>
+
+namespace Ui {
+class InvitationDialog;
+}
+
+class InvitationDialog : public QDialog
+{
+    Q_OBJECT
+
+public:
+  explicit InvitationDialog(QWidget *parent = 0);
+  ~InvitationDialog();
+
+  void
+  setMsg(const std::string& inviter, const std::string& chatroom);
+
+  inline void
+  setInterestName(const ndn::Name& interestName)
+  { m_interestName = interestName; }
+
+signals:
+  void
+  invitationAccepted(const ndn::Name& interestName);
+  
+  void
+  invitationRejected(const ndn::Name& interestName);
+
+private slots:
+  void
+  onOkClicked();
+  
+  void
+  onCancelClicked();
+
+
+private:
+  Ui::InvitationDialog *ui;
+  ndn::Name m_interestName;
+};
+
+#endif // INVITATIONDIALOG_H