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 are the seasons like in your city ?  
 Person2:Summers is hot and usually lasts a long time . Winters are short , but cold , wet , and windy . I love the summers in my city , but I hate the wintertime .  
 Person1:        Does it ever rain in summer ?  
 Person2:We usually get a big thunderstorm every two weeks , but apart from that , summers are dry . Thunderstorms make the air fresh again , so most people don ’ t mind then .  
 Person1:        What are spring and autumn like ?  
 Person2:I like spring because flowers bloom and trees grow leaves again . In spring , the weather is very changeable-sometimes cold , sometimes warm . It ’ s usually windy with some rain . Autumn is usually sunny an  
 Person1:        Well , I live in the southern hemisphere , so our summertime is your wintertime , and vice versa . We get some rain in every season , but most is in winter . In winter , it sometimes gets cold , but our wine  
 Person2:Do you usually go on a summer holiday ?  
 Person1:        No , I don ’ t . I go on a winter holiday instead . I go somewhere warm .  
 Person2:I usually go on holiday during the spring or the autumn . I try to go somewhere where the weather is more reliable than in my city . 

formal