Detailed Instructions: 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'.
Q: Person1: I'm the coolest high-tech stud around ...
Person2:Why ? Do you have a robot girlfriend ?
Person1: Not yet ... I got an MP3 player and a set of stereo headphones .
Person2:So you can download MP3 music from the Net and record it onto the MP3 chip ?
Person1: Yep ! And take it with me anywhere ! And the music is free !
Person2:Let me see it ! It's so small !
A:
informal