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 days do you take off for Easter ? 
 Person2:Usually we have a month off . 
 Person1:        What will you do for this Easter ? 
 Person2:I'll stay at home and have a complete rest . 

formal