TASK 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'.
PROBLEM: Person1: I'm going to Ireland this summer .
Person2:Are you going to take your children along ?
Person1: No , I'd like to go alone .
Person2:Have a nice holiday !

SOLUTION: formal

PROBLEM: Person1: Anyone home ? Jen !
Person2:I'm in the kitchen ... let yourself in !
Person1: Wow ! You're really working up a storm !
Person2:I know . I've even worked up a sweat .
Person1: You look like a cooking show host--only messier .

SOLUTION: formal

PROBLEM: Person1: If you fall in love like him , you will go soft in the head , as well .
Person2:Come off it .
Person1: You want a bet ?
Person2:Why not ?

SOLUTION:
informal