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:       I hear that you are in love with Mike .  
 Person2:You are kidding .  
 Person1:        Don't you hit it off ?  
 Person2:Although we have many things in common , we'are not soul mates . 

informal