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 , I'm Jake . I'm new to the choir . What's your name ? 
 Person2:Hello , there , my name is Tonia . 
 Person1:        Do you sing alto ? 
 Person2:Actually , I can do both soprano and alto but the director asked me to sing alto for the next perforate . What about you . 
 Person1:        Looks like we both float back and forth . I'm baritone . 
 Person2:Our bass section is really good . You're going to love singing with them . 
 Person1:        I heard them warming up earlier . You're right . 
 Person2:It's good to have you in the group . We can always use a good baritone ! 

informal