instruction:
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'.
question:
Person1: Good afternoon . Reservations . May I help you ?
Person2:Yes , I'm calling from Tenga Company . I'd like to know if you have rooms available for the nights from October 8 to October 12 . We are going to have a business conference .
Person1: May I ask how many people there will be in the party ?
Person2:20 persons .
Person1: What kind of room would you like ?
Person2:Double rooms with twin beds .
Person1: A moment please , sir . Yes , I can confirm 10 rooms for those days .
Person2:Thank you . Is there a special rate for a group reservation ?
Person1: Yes , there is a 10 percent discount .
Person2:That is fine .
answer:
formal

question:
Person1: Look ! It ' s the start of the Olympic Games .
Person2:So what ?
Person1: You want to watch , don ' t you ?
Person2:Not really . I couldn ' t careless about the Olympic Games .
Person1: Please yourself .
answer:
formal

question:
Person1: Hello , I want to make a reservation for a Qingdao cruise .
Person2:When will you set out ?
Person1: Next week .
Person2:OK . There is one on Wednesday .
Person1: Good ! How much does the sea view stateroom cost for per person ?
Person2:Eight hundred yuan .
Person1: I see . Does that include fees for shore excursions ?
Person2:No . It doesn't . But it includes all other on board activities .
Person1: Thanks a lot . Give me one ticket , please .
answer:
informal