[
  "help",
  "exit",
  "exit_invalid_request",
  "exit_invalid_menu_option",
  "exit_invalid_recipient",
  "exit_invalid_input",
  "exit_invalid_pin",
  "exit_pin_mismatch",
  "exit_pin_blocked",
  "account_creation_prompt",
  "exit_successful_transaction",
  "exit_insufficient_balance",
  "complete"
]