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:       Tiffany , why are more and more people turning to the Web to find a mate ? 
 Person2:I think that , as more people use the Internet for both work and pleasure , it makes more sense as a tool to connect with people , and the stigma of meeting someone online is reduced . 
 Person1:        There are actually special sites for people looking to date within their specific ethnic group and age group . But how should you screen potential mates ? Do you suggest talking to them on the phone right away or communicating via e-mail ? 
 Person2:I would say do not make the e-mail exchange too long . A lot of times a connection via e-mail creates almost a false sense of intimacy . Quickly make sure there is a connection in the physical world . 
 Person1:        Can you give us any other safety tips for people pursuing relationships on the Net ? 
 Person2:I'd suggest you not give out too much personal information , like your home address , until after several dates . Just keep up the same guards you would keep up if you were meeting any stranger . 
 Person1:        Besides the growth of these matchmaker sites , do you have any stats on success rates ? Are people out there finding true and lasting love through the Internet 
 Person2:Well , for a site like ecrush.com , since their debut in Valentine's Day in 1999 , of the 1.5 million people who have joined ecrush.com , 300000 have actually matched . 
 Person1:        Do you have any successful stories to share ? 
 Person2:Yes , the couple that I highlighted at today's show met on Match.com and they're getting married this summer . 

formal