Unmanned aircraft systems with a customer interface system and methods of delivery utilizing unmanned aircraft systems

In some embodiments, systems and methods are provided to enable package delivery and interaction with customers. Some embodiments comprise unmanned aircraft system (UAS), comprising: a crane system comprising a first spool system and a crane motor, the first spool system comprises a first cord that is extended and retracted; a retractable interface system cooperated with the first cord; a package holder configured to hold a first package to be delivered by the UAS at a delivery location; a control circuit coupled with the crane motor to control the crane motor, and to activate the crane motor to extend the first cord and lower the retractable interface system while the UAS is maintained in flight at least at a threshold height; wherein the retractable interface system comprises an input interface to receive input from a customer at the delivery location.