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: So Kevin , what is your type ?
Person2:I like girls who like to have fun , and aren't too serious .
Person1: I agree . I like guys that can make me laugh .
Person2:That's true . Having a very serious boyfriend or girlfriend can be boring .

SOLUTION: informal

PROBLEM: Person1: Here's the picture of my family .
Person2:Can you point out your mother for me ?
Person1: OK.She ' s near-sighted , with a pair of glasses on her nose.She is the only one wearing glasses in my family .

SOLUTION: formal

PROBLEM: Person1: Can I have this roll of film developed here ?
Person2:Sure . Let's see it .
Person1: Here you are .
Person2:What size of prints would you like to have ?
Person1: Regular will be fine . How long will it take ?
Person2:Only four hours .
Person1: Good . I'll come back in the evening .

SOLUTION:
formal