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: They are professors and government officials .
Person2:Where are they from ?
Person1: Most of them are from America and Europe .
Person2:What are they doing in Beijing ?
Person1: They are attending an international conference here .
Person2:Which hotel are they staying at ?
Person1: They are staying at the Hilton Hotel .
A:
formal