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:       Do you know that I'm checking out in about 30 minutes ?  
 Person2:Just say the word , sir .  
 Person1:        Excellent ! Now , as you know , the day has barely begun .  
 Person2:I agree . The dew is still on the grass .  
 Person1:        I want to hit a few more places in the city , but I need a place to put my luggage .  
 Person2:We do have a storage space for your bags . There's a small charge , plus a deposit .  
 Person1:        Leave a deposit ? Isn't leaving the luggage enough of a deposit ?  
 Person2:Regrettably , no . But simply present your VISA to cover your deposit .  
 Person1:        Hmm . I'll have to think about this for a second .  
 Person2:Okay , sir , but don't think too long . Your checkout is only 30 minutes away . 

formal