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: Great party , isn't it ?
Person2:Yeah , really , jane and ted always have great parties .
Person1: This is my first , I only met jane last week . she and I teach at the same school .
Person2:Oh , so you're a teacher .
Person1: Yeah , history , what about you ?
Person2:I'm in the car business .
Person1: Salesman ?
Person2:Yes , that's right .
Person1: Oh , I see , by the way , my name's Mary .
Person2:Nice to meet you , I'm jim taylor .
A:
formal