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: How long have you been in Taiwan ?
Person2:About 3 years , so I came here 2000 .
Person1: So , where did you grow up ?
Person2:Providence , Rhode Island . do you know it ?
Person1: I am not sure , where exactly is it ?
Person2:Well , not so far from New York . So what about you ? Did you grow up here ?
Person1: No , I was born in Gaoxiong , I only moved to Taipei after I graduated .
A:
formal