EI means Aer Lingus Airlines. 

For those traveling out of Boston (BOS)
Monday July 13 – EI flight 132
BOS to Shannon (SNN) departs 7:00 pm and arrives at Shannon at 6:00 am on Tues, July 14.
Wednesday July 22 – EI flight 137
Dublin (DUB) to BOS departs 2:00 pm and arrives Boston at 4:05 pm
In travel agency lingo:
1@EI  132 W MON 13JUL BOSSNN    HK 1900 0600*1
2@EI  137 W WED 22JUL DUBBOS    HK 1400 1605

For those traveling out of New York (JFK)
Monday July 13 – EI Flight 110
JFK to Shannon (SNN) departs at 6:30 pm and arrives at Shannon at 5:45 am on Tues, July 14.
Wednesday July 22  - EI Flight 105
Dublin to New York departs at 10:30 am and arrives at JFK at 1:00 pm
In travel agency lingo:
1@EI  110 W MON 13JUL JFKSNN    HK 1830 0545*1
2@EI  105 W WED 22JUL DUBJFK    HK 1030 1300