You will be given a definition of a task first, then some input of the task.
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'.

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 !
Output:
informal