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:       Can I help you ?  
 Person2:Yes , I'm looking for a house .  
 Person1:        To buy or to rent ?  
 Person2:Oh , to rent .  
 Person1:        How much do you want to pay ?  
 Person2:About 300 a month .  
 Person1:        Well , I've got one here . It's 260 a month .  
 Person2:How big is it ?  
 Person1:        It's got a kitchen , a bathroom , and one bedroom .  
 Person2:Well , actually I prefer something a bit bigger if that's possible .  
 Person1:        Yes , I think so . There is also an interesting one.It ' s opposite the park .  
 Person2:How much is it ?  
 Person1:        It's 325 a month . It's the biggest we've got in this area .  
 Person2:What's it like ?  
 Person1:        Well , There're two bedrooms , a sitting room , a kitchen and a bathroom .  
 Person2:It sounds interesting . Can I go and see it ?  
 Person1:        Of course , Sir . 

informal