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:       Hey , Mike . Can I ask you something ?  
 Person2:Sure , what's up ?  
 Person1:        I'm going to gamble on the world cup tonight . Who do you think will win ?  
 Person2:Good question . I have to think about it .  
 Person1:        My husband is betting on France .  
 Person2:France ? Is he crazy ?  
 Person1:        What do you mean ?  
 Person2:Well , how can I put this ? France is a terrible team . 

formal