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:       Do bullfights interest you much ?  
 Person2:Absolutely ! Everything that ’ s thrilling turns me on .  
 Person1:        So I ’ Ve got two tickets to the latest show but I need a little favor from you .  
 Person2:What is it ? 

informal