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 see the 2005 Grammy Awards on TV last night . 
 Person2:Yeah . I was so happy , because my favorite singer , Ricky Martin won ' Best Latin Pop Performance ' . 
 Person1:        He seems to win awards everywhere . 
 Person2:He is really great . He has sold millions of records worldwide . He is especially known for his rocking performance at the football World Cup song-the Cup of World . 
 Person1:        I heard one observer even said ' It was a song sung in Spanish for international football , and he made it so popular that even the Americans loved it . ' 
 Person2:That's right . His voice ranges from the smooth sound of ballads to the highpowered rhythms of the Spanish Caribbean where he grew up . He has fan clubs across the world , from America to Russia , from England to Taiwan , from Norway to Australia . 

informal