def insert_offered_trainings(id_slack, team, suggestion):
session = SQLManager().get_session()
msg = OfferedTraining(id_slack, team, suggestion)
session.add(msg)
session.commit()
session.close()
def insert_user(id_slack, team):
session = SQLManager().get_session()
user = User(id_slack, team)
session.add(user)
session.commit()
session.close()