You will be given a definition of a task first, then some input of the task.
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: When did you and Amanda meet each other ?
Person2:I met her about one year ago .
Person1: So you met her right after you got to school ?
Person2:That's right . We've been dating since last September .
Output:
formal