### Database Schema:
CREATE TABLE Airlines (
	FL_DATE	TEXT	NULL,
	OP_CARRIER_AIRLINE_ID	INTEGER	NULL,
	TAIL_NUM	TEXT	NULL,
	OP_CARRIER_FL_NUM	INTEGER	NULL,
	ORIGIN_AIRPORT_ID	INTEGER	NULL,
	ORIGIN_AIRPORT_SEQ_ID	INTEGER	NULL,
	ORIGIN_CITY_MARKET_ID	INTEGER	NULL,
	ORIGIN	TEXT	NULL,
	DEST_AIRPORT_ID	INTEGER	NULL,
	DEST_AIRPORT_SEQ_ID	INTEGER	NULL,
	DEST_CITY_MARKET_ID	INTEGER	NULL,
	DEST	TEXT	NULL,
	CRS_DEP_TIME	INTEGER	NULL,
	DEP_TIME	INTEGER	NULL,
	DEP_DELAY	INTEGER	NULL,
	DEP_DELAY_NEW	INTEGER	NULL,
	ARR_TIME	INTEGER	NULL,
	ARR_DELAY	INTEGER	NULL,
	ARR_DELAY_NEW	INTEGER	NULL,
	CANCELLED	INTEGER	NULL,
	CANCELLATION_CODE	TEXT	NULL,
	CRS_ELAPSED_TIME	INTEGER	NULL,
	ACTUAL_ELAPSED_TIME	INTEGER	NULL,
	CARRIER_DELAY	INTEGER	NULL,
	WEATHER_DELAY	INTEGER	NULL,
	NAS_DELAY	INTEGER	NULL,
	SECURITY_DELAY	INTEGER	NULL,
	LATE_AIRCRAFT_DELAY	INTEGER	NULL,
	foreign key (ORIGIN) references Airports (Code),
	foreign key (OP_CARRIER_AIRLINE_ID) references `Air Carriers` (Code),
	foreign key (DEST) references Airports (Code)
);

CREATE TABLE Airports (
	Code	TEXT	NULL	PRIMARY KEY,
	Description	TEXT	NULL
);

CREATE TABLE `Air Carriers` (
	Code	INTEGER	NULL	PRIMARY KEY,
	Description	TEXT	NULL
);

### User's Query:
What is the scheduled local departure time and the actual departure time of the flight from Philadelphia to Harrisburg with the plane's tail number N627AE on the 13th of August 2018?

### Extra Knowledge:
scheduled local departure time refers to CRS_DEP_TIME; actual departure time refers to DEP_TIME; from Philadelphia refers to ORIGIN = 'PHL'; to Harrisburg refers to DEST = 'MDT'; tail number refers to TAIL_NUM; TAIL_NUM = 'N627AE'; on the 13th of August 2018 refers to FL_DATE = '2018/8/13';
SELECT CRS_DEP_TIME, DEP_TIME FROM Airlines WHERE ORIGIN = 'PHL' AND DEST = 'MDT' AND TAIL_NUM = 'N627AE' AND FL_DATE = '2018/8/13'