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:       What ? I don't get it ...  
 Person2:Many of the slower dances are danced to the lyrics of tragedies . He meant that you turned it into a comedy .  
 Person1:        Well , I'm glad I made everyone happy .  
 Person2:He meant it in a good way . You added a little spice to the performance .  
 Person1:        I'm glad you guys all have such a good sense of humor . Ha-ha ...  
 Person2:Of course ! That's why I always say , Eat , drink and be Greek ! 

informal