Teacher: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'.
Teacher: Now, understand the problem? Solve this instance: Person1: Dad , you keep talking about family in New Zealand . Who are they ?
Person2:Well , that's your uncle Bill , his wife and two of their daughters .
Person1: Is uncle Bill your brother ?
Person2:No , your uncle Jack is my brother , Bill is my brother-in-law , your mom's brother .
Person1: So his two daughters are my cousins ?
Person2:That's right , Sarah and Jane are both your cousins although they are step-sisters .
Person1: What are step-sisters ?
Person2:Sarah is your uncle Bill's older daughter . When she was young , Bill's first wife , Sarah's mom died . Three years later Bill married again .
Person1: So uncle Bill's wife is Jane's mother but not Sarah's mother . Right ?
Person2:Yes . She is Sarah's step-mother .
Person1: And when are they coming to visit us ?
Person2:They want to travel to Europe next year , and will visit us at the same Ae .
Student:
formal