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:       Well , I've got a date . Now I need to find a restaurant . Can you help me ? 
 Person2:No problem , of course ! How much would you like to spend to impress the lady ? 
 Person1:        Nothing but the best for a pretty woman ! 
 Person2:Sir , the restaurant you seek is right here . This hotel has a three-star restaurant . 
 Person1:        Well , I sort of suggested that we would go out on the town . Do you have another suggestion ? 
 Person2:Gramercy Tavern is at least as good as our own hotel restaurant . Plus , they have live jazz . 
 Person1:        Gramercy Tavern , eh ? I think I've heard of that before . Call to get us a table , okay ? 
 Person2:Right away , sir . She will be impressed with your local knowledge . 

formal