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 many cleaning ladies does your company hire ?  
 Person2:We have two cleaning ladies . But both of them have received little education .  
 Person1:        Most cleaning ladies are illiterate . But some of them do a very nice job .  
 Person2:But I actually dislike another lady . She is more capable and seems to have ideas of her own . But the trouble is she Isa backseat driver with some of us . She would tell you what to do and where to put things . 

formal