diff --git a/src/teams_bot/bot.py b/src/teams_bot/bot.py
index 11357af..313e024 100644
--- a/src/teams_bot/bot.py
+++ b/src/teams_bot/bot.py
@@ -3,6 +3,9 @@ from threading import Event
 
 import deltachat
 from deltachat import account_hookimpl
+from deltachat.capi import lib as dclib
+
+from .commands import set_display_name, help_message
 
 
 class SetupPlugin:
@@ -51,9 +54,13 @@ class RelayPlugin:
                     message.get_sender_contact().addr,
                     message.text,
                 )
-                """:TODO handle command"""
+                arguments = message.text.split(" ")
+                if arguments[0] == "/help":
+                    self.reply(message.chat, help_message(), quote=message)
+                if arguments[0] == "/set_name":
+                    self.reply(message.chat, set_display_name(self.account, arguments[1]), quote=message)
             else:
-                logging.debug("Ignoring message, just admins chatting")
+                logging.debug("Ignoring message, just the crew chatting")
 
         elif self.is_relay_group(message.chat):
             if message.quote:
@@ -64,14 +71,22 @@ class RelayPlugin:
                     logging.debug("Forwarding message to outsider")
                     self.forward_to_outside(message)
                 else:
-                    logging.debug("Ignoring message, just admins chatting")
+                    logging.debug("Ignoring message, just the crew chatting")
             else:
-                logging.debug("Ignoring message, just admins chatting")
+                logging.debug("Ignoring message, just the crew chatting")
 
         else:
             logging.debug("Forwarding message to relay group")
             self.forward_to_relay_group(message)
 
+    def reply(self, chat: deltachat.Chat, text: str, quote: deltachat.Message = None):
+        """Send a reply to a chat, with optional quote."""
+        msg = deltachat.Message.new_empty(self.account, view_type="text")
+        msg.set_text(text)
+        msg.quote = quote
+        sent_id = dclib.dc_send_msg(self.account._dc_context, chat.id, msg._dc_msg)
+        assert sent_id == msg.id
+
     def forward_to_outside(self, message: deltachat.Message):
         """forward an answer to an outsider."""
         bot_localpart = self.account.get_config('addr').split('@')[0]
diff --git a/src/teams_bot/cli.py b/src/teams_bot/cli.py
index 04647a2..744a29e 100644
--- a/src/teams_bot/cli.py
+++ b/src/teams_bot/cli.py
@@ -114,7 +114,9 @@ def run(ctx, db: str, verbose: int):
     set_log_level(verbose, db)
 
     ac = deltachat.Account(db)
+    display_name = ac.get_config("displayname")
     ac.run_account(account_plugins=[RelayPlugin(ac)], show_ffi=verbose)
+    ac.set_config("displayname", display_name)
     try:
         ac.wait_shutdown()
     except KeyboardInterrupt:
diff --git a/src/teams_bot/commands.py b/src/teams_bot/commands.py
new file mode 100644
index 0000000..7eab2d5
--- /dev/null
+++ b/src/teams_bot/commands.py
@@ -0,0 +1,22 @@
+import deltachat
+
+
+def help_message() -> str:
+    """Get the help message
+
+    :return: the help message
+    """
+    help_text = """
+Change the bot's name:\t/set_name <name>
+Show this help text:\t\t/help
+    """
+    return help_text
+
+
+def set_display_name(account: deltachat.Account, display_name: str) -> str:
+    """Set the display name of the bot.
+
+    :return: a success message
+    """
+    account.set_config("displayname", display_name)
+    return "Display name changed to " + display_name