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:       What do you think of AC milan and the team of Argentine ?  
 Person2:They aren't evenly matched .  
 Person1:        Yes , I think AC Milan's foot work is much better on the whole .  
 Person2:Yet the Argentine attacker is worth a bet . 

formal