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:       How was your date recently ?  
 Person2:Not too bad . It is seemingly too hard for me to find a place for our date .  
 Person1:        I guess so . Going to watch a movie and having dinner at a restaurant are usual .  
 Person2:She said she wanted to go Dutch in dating .  
 Person1:        Yes , now many girls want to be independent , so it is a little popular , especially among white collars .  
 Person2:But I am still traditional , so I felt weird when she paid for herself .  
 Person1:        Forget about it !  
 Person2:Are you satisfied with your girlfriend ?  
 Person1:        It will be a long story . We have many differences , for example , she usually puts all her clothes into washing machine . That is the sort of thing I can not bear . 

formal