Instructions: 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: Hi , why do you look so depressed today , Mike ?
Person2:I had a terrible quarrel with my neighbor yesterday .
Person1: How come ?
Person2:It is a long story . Basically , she thought I had laughed at her while I didn't .
Person1: I know everyone suffers when he is misunderstood . But why not take it easy ?
Person2:Yeah . It's so nice of you to comfort me .
Output:
informal