a=0
@dp.message_handler()
async def echo(message: types.Message):
if(message.text=="⚡️ ️Купить билет" and a==0):
await message.reply(" Загружаем данные")
keyboard = ReplyKeyboardRemove()
back = ReplyKeyboardMarkup(resize_keyboard=True, one_time_keyboard=True)
buttons = ["⚡️ Назад"]
back.add(*buttons)
a=1
if(a==1 and message.text=="⚡️ Назад"):
a=0
return