Q: 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: Excuse me , how do I get to the Forbidden City ?
Person2:Follow this road and turn right at the second intersection . It'll be right there .
Person1: Is it far ?
Person2:No , it should only take you about 15 minutes by foot .
Person1: Thank you .
A:
informal