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:       When do children start school in your country ? 
 Person2:Normally at six . Before that , they spend several years in the kindergarten or pre-school education center . 
 Person1:        But thats only in the cities , isnt it ? 
 Person2:Right . In the countryside , things are more complicated . 
 Person1:        Can kids in the countryside get equally good benefits and education like those in the cities ? 
 Person2:It depends . In some poor , underdeveloped areas , children's education is a problem . Many kids cannot afford to go to school . 

formal