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:       Lily thinks that the job takes a back seat to the family after she is married .  
 Person2:She must be a good wife .  
 Person1:        Not necessarily . This is only what she says , not what she does .  
 Person2:I see . 

informal