Ulukman Amangeldiev

@bot.message_handler(commands=['start'])
def process_start(message):
    board = types.InlineKeyboardMarkup()
    cancel = types.InlineKeyboardButton(text="Отмена", callback_data="Отмена")
    board.add(cancel)
    text = 'start'
    msg = bot.send_message(message.chat.id, text, reply_markup=board)
    bot.register_next_step_handler(msg, process_mid)


def process_mid(message):
    board = types.InlineKeyboardMarkup()
    cancel = types.InlineKeyboardButton(text="Отмена", callback_data="Отмена")
    board.add(cancel)
    text = 'mid'
    msg = bot.send_message(message.chat.id, text, reply_markup=board)
    bot.register_next_step_handler(msg, process_end)


def process_end(message):
    text = 'end'
    bot.send_message(message.chat.id, text)


@bot.callback_query_handler(func=lambda call: True)
def callback_inline(call):
    if call.message:
        if call.data == "Отмена":
            bot.edit_message_text(chat_id=call.message.chat.id, message_id=call.message.message_id, text='Отменено.')
            bot.clear_step_handler_by_chat_id(chat_id=call.message.chat.id)


bot.polling(none_stop=True)