Flannery is an opening convention that shows 4 spades, 5 hearts* and 11-15 HCP.

Suggested responses to partner's opening of a Flannery 2:
2: To play
2: To play
2N: Forcing, artificial, requests further description. Opener's rebids:

3 shows 3 clubs 3 shows 3 diamonds 3 shows a balanced minimum 3 shows a balanced maximum 3N shows 6 hearts 4 shows 4 clubs 4 shows 4 diamonds

3: Asks opener to bid 3N if holding clubs Qx or better
3: Asks opener to bid 3N if holding diamonds Qx or better
3: Invitational in hearts
3: Invitational in spades
3N: To play
4: Keycard ask for hearts
4: Keycard ask for spades
4: To play
4: To play

Some use 2 as Flannery instead.