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:       Steven , why are you so depressed ?  
 Person2:I'm feeling very sad . I just read the newspaper .  
 Person1:        What's the news ?  
 Person2:According to the newspaper , the town was razed by an earthquake and more than 10 thousand people died in the earthquake .  
 Person1:        It's horrible .  
 Person2:Yeah , we have to do something to help the people in the stricken area .  
 Person1:        Yes . How about donating some money ?  
 Person2:It's a good idea . But where can we donate money ?  
 Person1:        Just find the answer through Internet .  
 Person2:Yes , let's do it now . 

informal