Definition: You are given a conversation between two people. 'Person1:' and 'Person2:' are used to separate their respective dialogues. You are required to assign a label 'formal' if there is an absence of emotion and a presence of questions anywhere within the conversation. If such pattern is not found assign the label 'informal'.
Input:  Person1:       Did you hear what's going on downtown today ? All the orders from the factory are staging a demonstration in the streets . Not one of the two thousand employees showed up for work today , and they have gathered outside the city hall to demand better working conditions for all factory employees . 
 Person2:Wow , sounds chaotic ... two thousand people in the streets carrying picket signs and shouting slogans . What gave them the motivation to finally organize and call management on the substandard working conditions ? 
 Person1:        I think they gained courage after the mayor's speech last week on equality and opportunity for all town citizens . Anyway , the sentiments have been brewing for quite some time . I mean , we all know the working conditions at the factory are quite horrendous . 
 Person2:So what kind of demands do they have ? What are they asking for specifically ? 
 Person1:        They want raises and medical insurance , and I think they want to clean up the factory's safety hazards . That's probably the most important issue . 

formal