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'.
Input: Person1: Excuse me , Professor , is there a time when I could meet with you ?
Person2:I could meet with you tomorrow anywhere from two until four ; what time works out best ?
Person1: I would like to come in at three o'clock .
Person2:I am glad that that works out ; can you find my office ?
Person1: Yes , I can .
Person2:Just follow the walkway to the outside and climb the stairs to the third floor .
Person1: I got it .
Person2:If you do get lost , just ask someone in the building to point the way .
Person1: Thank you , I'll be there .
Person2:If you need to cancel your appointment , please give me a call !
Output:
formal