Given the task definition and input, reply with output. 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'.

Person1: Do you have some good ideas of losing weight ?
Person2:First of all , you should pay attention to what you eat . Don't eat too much food with high calories , such as chocolate , ice cream and the like .
Person1: Any more ?
Person2:Stay away from fried foods . Fried foods are fried in oil or fat .
Person1: Got it .
Person2:Do not be a couch potato . You should do more exercise .
Person1: Well , it seems that I should do some jogging from tomorrow on .
formal