ORA-02256: number of referencing columns must match referenced columns

CREATE TABLE FLIGHT (
  FLIGHT_ID NUMBER(3),
  AIRCRAFT_ID VARCHAR(8),
  FLIGHT_DATE DATE,
  CONSTRAINT PK_flight_comp_pk PRIMARY KEY (FLIGHT_ID,FLIGHT_DATE),
  CONSTRAINT FK_flight_route_ID FOREIGN KEY (FLIGHT_ID)
    REFERENCES FLIGHT_ROUTE(ROUTE_ID),
  CONSTRAINT FK_flight_serial_ID FOREIGN KEY (AIRCRAFT_ID)
    REFERENCES AIRCRAFT(AIRCRAFT_ID)
);

CREATE TABLE RESERVATIONS (
  CUSTOMER_ID NUMBER(4),
  FLIGHT_ID NUMBER(3),
  QTY_RESERVED_SEATS NUMBER(3),
  CONSTRAINT PK_reservations PRIMARY KEY (CUSTOMER_ID,FLIGHT_ID),
  CONSTRAINT FK_reservations_customer_ID FOREIGN KEY (CUSTOMER_ID)
    REFERENCES CUSTOMER(CUSTOMER_ID),
  CONSTRAINT FK_reservations_flight_ID FOREIGN KEY (FLIGHT_ID)
    REFERENCES FLIGHT(FLIGHT_ID,FLIGHT_DATE)
);