findForCustomer [Message] display [Message] getBalance() [Message] select Display Balance [Message] [No name] [No name] [Combined Fragment] customer [Lifeline] _account [Lifeline] _account [Lifeline] _displayBalanceForm [Lifeline] _displayBalanceForm [Lifeline] _menuForm [Lifeline] _menuForm [Lifeline] Display balance - Basic Flow [Interaction] Display balance - Basic Flow [Interaction]