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:       I can ’ t believe it !  
 Person2:What ’ s wrong ? That was a great goal .  
 Person1:        Yes , but I bet $ 200 dollars on the Cougars !  
 Person2:Looks like you ’ re going to lose out on this game then .  
 Person1:        I can ’ t believe it ! I thought the Cougars were going to win for sure .  
 Person2:What were the odds ?  
 Person1:        20 to 1 , in favour of the Cougars !  
 Person2:Too bad . 

informal