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: Hi , waiting for the bus ? Where are you going ?
Person2:China Hotel .
Person1: Why don't you take a taxi ? It'll get you there much faster .
Person2:Well , I think I'll take the bus this time just for a change .
A:
formal