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:       In spring , people are feeling refreshed . They take off their heavy winter clothes and walk with a straight back and light steps . They feel they are full of spirits and energy .  
 Person2:Women in particular . They are anxious to get rid of those thick and clumsy winter suits and put on their new fashionable spring dress .  
 Person1:        Well , when summer comes , the weather is hot and the leaves turn darkgreen ; the sun is blazing and the air is threatening . No one would like to stay in the open air for long .  
 Person2:That's true . In summer , the first place people want to go is a spacious room with air-conditioning or a quiet river or swimming pool .  
 Person1:        I myself like very much to listen to the singing of some of the insects , especially the singing of cicadas .  
 Person2:In autumn , almost all fruits are ripe and all crops are waiting to be harvested .  
 Person1:        And you can hear singing and laughing everywhere ! People are happy in autumn because autumn brings them harvest and richness and prosperity !  
 Person2:Well , winter is a season for relaxation , do you agree with me ?  
 Person1:        Well , it's hard to say . For the fields and rivers , winter is a relaxing season , but for farmers , I think they might take a rest physically , but mentally they are still busy thinking , planning and calculating for the working of the next year .  
 Person2:Maybe you are right . 

formal