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: Is there anything I can do for you ?
Person2:Yes , I'd like to buy a color TV .
Person1: We carry products from three large manufacturers and some imported ones , too . Do you have a specific model in mind ?
Person2:No . Which one do you recommend ?
Person1: This one from Sony gives a very sharp picture .
Person2:Thank you , but I'd prefer to buy a China-made set .
Person1: Which brand do you prefer ?
Person2:Sky worth .
Person1: OK . Come with me , please .
Student:
formal