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:       Mary and I decided to ring the curtain down on our love affair .  
 Person2:What ? You have been in love for six years , haven ’ t you ?  
 Person1:        Don ’ t make a fuss . Many people divorce after having living together for many years .  
 Person2:What a pity . 

formal