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:       What do you think of your personality ? 
 Person2:I am quite alive and energetic . I am a curious person , and I like to learn new things . 
 Person1:        Do you think you are introverted or extroverted ? 
 Person2:I am quite outgoing , I think . 
 Person1:        How do you get along with people whose characters are different from your own ? 
 Person2:I try to adapt myself . 

formal