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:       Can you tell which team seems to win ?  
 Person2:Hard to say . Now the score is in our favor .  
 Person1:        Yes . Our guest team is really tough .  
 Person2:They're still fighting hard . Let's wait and see . 

formal