text: cancel = "Cancel!"
  ask_name = "Whats your name?"
  ask_age = "How old are you?"
  ask_phone_number = "Send me your phone number with code (example: +98xxxxxxxxxx):"
  already_registered = "Dear {msg.from_user.first_name}, you are already registered."
  register_canceled = "OK! if you want to register, send /start again"
  user_registered = "You have registered successfully."
  error_occurred = "An error occurred! please try again."
  invalid_input = "Invalid input!"
  