$3$ Based on thefollowing $3$NF relations, $.$ Dash underline all foreign keys and draw arrows from FKs to PKs$.$ Convert the relation into final ERD. You can use the text based representation.

Flight $($flight number, departing airport, arriving airport, departure time, arrival time$)$

Schedule$($schedule num, flight number, flight date$)$

Reservation$($reservation code, passenger name, agent #$,$ schedule num, seat number$)$

Agent $($agent number, agent name$)$