Definition: 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'.
Input:  Person1:       Oh dear , Miss , you are soaked ! Wow , it's really raining heavily outside . 
 Person2:Yes , it sure is . I had to run here from work ! I need to rush as I'm on my lunch break . 
 Person1:        Well please , why don't you go ahead of me in line ? I'm in no hurry . 
 Person2:Oh , that's so nice of you ! Thank you very much . 
 Person1:        My pleasure Miss . Actually , could you recommend what to eat here ? I've never been here before . 
 Person2:Sure . Well , the avocado sandwich is delicious , and it's the healthiest thing on the menu . Personally , I think the beef salad is the tastiest choice . I usually get that . Also , the milkshakes are the best milkshakes in town ! 
 Person1:        Well , thanks for the suggestions . 
 Person2:Oh , don't mention it . 

informal