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: Consider Input: Person1: Excuse me , Sir , do you know what time it is ?
Person2:Oh , it ' s almost eleven twenty .
Person1: Thank you .
Person2:You ' re welcome . The rain is quite heavy , isn ' t it ?
Person1: Yeah . I was in a hurry and I forgot my umbrella today .
Person2:I have one . We could share it . Which way are you going ?
Person1: Oh , that ' s very kind of you . I am going to the Garden Hotel .
Person2:I am going there , too . We can walk together .
Person1: Sure .

Output: formal

Input: Consider Input: Person1: Is this the class to prepare for interviews ?
Person2:This is the right place . Please join us .
Person1: I have an interview tomorrow , so I hope I can learn everything quickly .
Person2:We are all going to have great interviews . What are some things that we need to remember in an interview ?
Person1: I think that we should make sure that our looks are the best they can be .
Person2:Right , and what about our friendliness and attitude ?
Person1: Yes , and being friendly and having a good attitude also help me relax .
Person2:Did you know that they pay as much attention to what you ask as to what you say in an interview ?
Person1: No , I didn ' t . What else should I keep in mind ?
Person2:Just relax , listen carefully to the questions , and be honest in your responses .

Output: formal

Input: Consider 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 .
Output: formal