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:       Have you gone bowling before ? 
 Person2:No . Could you tell me something more about it ? I want to play well . 
 Person1:        There are 10 frames in a bowling game . Each player is allowed to bowl two balls in each frame . 
 Person2:You just said 10 rounds . 
 Person1:        ' Round ' and ' frame ' are two different terms . 
 Person2:Perhaps you can tell me a little more about this . 
 Person1:        Hey , slow down . I'll tell you more while playing . 

formal