The Obama administration is taking its effort to promote responsible fatherhood, which it launched with a White House town hall event just before Father’s Day, on the road, hosting a half-dozen town halls in the next few months in different parts of the country. The first event will happen in Chicago next Wednesday. It will feature a videotaped message from President Obama, a roundtable and networking session for local nonprofit groups, presentations by administration officials, and a panel of local dads, according to an adviser for the effort.