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:       Which sports are popular in your country ?  
 Person2:Most people like football . More boys like football than girls . A few girls play it really well . Some people like playing basketball .  
 Person1:        Do many people like tennis ?  
 Person2:More and more people like it now . fewer people play table tennis than before . Many people like swimming , because it is fun and keeps you fit .  
 Person1:        In my country , many people enjoy golf , but it is too expensive for some people . A few people like extreme sports , but I think the vast majority of people are afraid to try them .  
 Person2:Extreme sports are only for a small minority of people . Several people from my university enjoy them , but most of us just watch . No one I know plays golf .  
 Person1:        I know loads of people who play it regularly . There are plenty of golf courses around the country . In the past , only a tiny number of people played .  
 Person2:A great deal of people follow rugby in my country .  
 Person1:        There are plenty of rugby fans in my country too . 

formal