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:       Hi , Mark , did you catch the game last night ?  
 Person2:No , I was out . Was it worth watching ?  
 Person1:        You didn ’ t hear ? Spain won , two to zero .  
 Person2:Oh , really ? So , Spain is through to the next round ?  
 Person1:        Yeah . The final is next week . You have to watch it . 

informal