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:       Did you get any rewards or honors in college ?  
 Person2:Yes , I received the scholarship 3 times on end .  
 Person1:        Did you join the Communist Party of China ( CPC ) ?  
 Person2:Yes , I joined the CPC when I was a freshman 

informal