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: What would you like to order , sir ?
Person2:I'd like to try some Chinese food .
Person1: We serve different styles of Chinese food here . But I'm not sure which one do you prefer .
Person2:I have no idea . Could you recommend some to me ?
Person1: Well . Cantonese food is rather light , Beijing food is heavy , and Sichuan food is usually hot and spicy .
Person2:Oh , I see . I'd like to have hot food .
Person1: If so , I suggest you have a taste for Sichuan food . Most Sichuan dishes are spicy and hot , but they have different tastes .
Person2:Really ? So do you have some specialties ?
Person1: Yes . Roasted Crispy Chicken and Spicy Beef are our specialties .
Person2:All right . I'll have them .
A:
formal