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:       Where are you living ? 
 Person2:I live in the southern part of this city . I rent a house . 
 Person1:        Do you move a lot ? 
 Person2:No , I don't . 

formal