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:       At their last meeting , the stockholders voted unanimously to block the merger of our company with Blycore . All the executive committee was in favor of the merger ... I don't understand how the stockholders could have so much power to throw a wrench in the plans ...  
 Person2:If they all unite on a certain issue , it's the stockholders who have the final say . You'd think it might be our CEO or the workers , but in fact , the stockholders control the money so they have the most power .  
 Person1:        Is it really that simple ? It doesn't seem very efficient to run things that way ...  
 Person2:It might not be the most efficient , but if you think about it , it makes pretty good sense . The stockholders are our investors . They own the capital in our company , so they should have say about what is done with the company .  
 Person1:        I guess I'd buy that ... 

formal