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:       OK , guys . Here's the plan . Get the ball to the goal , and keep it away from Rich and Taylor !  
 Person2:Why ? Are they good ?  
 Person1:        They played ball at school . Here we go . Yi-jun , go out for a pass !  
 Person2:I'm ready ! Whoa , what a hard throw ! I can't get that !  
 Person1:        Catch it , Yi-jun ! Run to the ball ! Uh-oh ! Slow down , you're going to hit ...  
 Person2:Ummmph ! 

formal