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:       Well , known , Jim , I'm ... I'm pretty much in favour of computers , I think computers teach kids to think , because they require logical thought . 
 Person2:But I ... I don't agree with that , because computers weaken kids ' ability to think , because kids don't learn basic skills . 
 Person1:        What do you mean ? 
 Person2:They can't spell , they can't add , they can't subtract , they even don't remember any more.that ' s because they rely on gadgets . 
 Person1:        That's not the gadgets.Creating programmes is stimulate thoughts . 

formal