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:       Do you mind if I ask your friend out ?  
 Person2:Of course , but we aren't going out , we're just friends .  
 Person1:        Okay , that's good .  
 Person2:Do you want me to put in a good word for you ? 

formal