Detailed Instructions: 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 have in your breakfast , bread , egg or sandwiches ?
Person2:Bread .
Person1: And milk or orange juice ?
Person2:Orange juice .
Person1: What would you like for lunch , pork , mutton or beef ?
Person2:I think mutton is best .
Person1: What kind of drink do you like most , red wine , beer or champagne ?
Person2:I like champagne .
Person1: And among apples , oranges and bananas , which is your favorite ?
Person2:Banana of course .
Person1: Do you always have meals outside or in your house ?
Person2:I always have meals outside , because I ' m not good at cooking .
A:
formal