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'.

Example 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 .
Example Output: formal

Example Input: Person1: Could you tell me the right time , please ?
Person2:Well , my watch says five past two , but it's no use relying on it , because it has been gaining and losing these last few days .
Person1: You'll have to get it fixed .
Person2:Yes , I will .
Example Output: formal

Example Input: Person1: Good morning , Linda . How have you been ?
Person2:Pretty bad . I ' Ve had a bad cold for three days and still can ' t get rid of it .
Person1: I ' m sorry to hear that . Is there anything else I can do ?
Person2:No , thanks .
Person1: Well , I hope you ' ll feel better soon .
Person2:Thank you for your concern .
Example Output:
informal