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:       You look so tan and healthy !  
 Person2:Thanks . I just got back from summer camp .  
 Person1:        How was it ?  
 Person2:Great . I got to try so many things for the first time .  
 Person1:        Like what ?  
 Person2:I went sailing , fishing , and horseback riding .  
 Person1:        I ’ m so jealous .  
 Person2:The counselors were so nice too . It was the best summer ever . Except for all those mosquitoes ! 

informal