The task of dialogue does have responsibilities. Dialogue is supposed to:
Advance the plot
Dialogue can and should both direct and change the course of a storyline. A simple revelation, like how much does it really cost to build a HDB flat, will soothe the skeptics about the affordability of public housing. To suggest that the housing authority actually incurs financial losses, like the fairy tale of the $8 open heart surgery, merely stresses the plot and prolongs the agony of the spin.
Dialogue cannot be bland. Characters in play should not speak in dour, colourless monotone, unless you plan a career in announcing electoral results with a robotic voice. The absence of emotional engagement when addressing the concerns of a worried generation says a lot about the sincerity of the speaker. Just avoid rabble rousing theatrics like prompting the audience to assent with a "keechiu!"
Create or increase conflict
Dialogue should shake up the status quo, not prolong the perpetuity of the ongoing injustices. The misunderstanding of multifarious parties in contention — either by accident or deliberate ploy - is only evil when by promoted by participants with separate agendas, pursuing those agendas at the expense of others. Even the authorities have issued a statement declaring that if insensitive comments are made in the heat of the moment, or by relatively immature persons who did not know better, after the investigations uncover, “a more nuanced response may follow” by the police in handling the matter.
Break up passages of action or inaction
Like fiction in a novel, too much of any element is simply too much. The audience need a break from the drone of the official spiel; repetition ad nauseam - "we are on your side" - can only put one to sleep; exposition without pause is merely regurgitation of propaganda; and constant dialogue, as would constant conversation in real life, annoys people to no end and drives them to alternative platforms like the May Day gathering.
One of the answers to the Shell Thought Leadership Question "How can a meaningful dialogue between the Government and the people be sustained" suggest that dialogue sessions should not be restricted to just "politically correct" opinions and views, and the people should be given the right to challenge the Government (Student, Tampines JC, 430 Votes). The student may wish to add a disclaimer about personal views and partisan parlance, even though that declaration may afford scant protection from whispering ministers.