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'.

Person1: If I remember correctly , time of delivery is another point on wich we differ .
Person2:That's right . Let's go into the details .
Person1: Ok . I hope you can have these goods delivered before the end of Sep . We'd like them to be there in time for our Christmas sales .
Person2:Christmas doesn't come until almost the end of the year , right ?
Person1: But in the United States the Christmas season begins about a month before Dec . 25 .
Person2:Well . I am afraid it will be difficult for us to advance the time of shipment . Our manufacturers are fully committed at the moment .
Person1: I hope you'll try to get them to step up production .
Person2:As new orders keep pouring in , the workers are working three shifts to step up production .
Person1: If that's the case , there is nothing more to be said .
Person2:I am sorry .
Person1: What's your last word as to the date then ?
Person2:I said by the middle of Oct . This is the best we can promise .
Person1: All right . I'll take you at your word .
Person2:Good . Let's call it a deal . We will do our best to advance the shipment , but your L / C should be opened early Sep .
Person1: I promise .
informal

Person1: Could I see the manager please ? I have a complaint to make .
Person2:Yes , I ' m the manager here . What can I do for you , Madam ?
Person1: Did you have the room checked before we move in ?
Person2:Which room are you in ?
Person1: 1808 . The toilet doesn ' t work properly . The water doesn ' t run in the shower .
Person2:I ' m awfully sorry to hear that . ( After checking ) I ' ll turn to it right away . I do apologize . We ' ll change your room to 2002 .
Person1: That ' s not bad . Thanks for your help .
Person2:It ' s my pleasure , Madam .
informal

Person1: Could we borrow the company van for a fundraiser this weekend ?
Person2:That would be a possibility . Where is this fundraiser taking place ?
Person1: It is in the hotel ballroom down the street .
Person2:Do you need it for the whole weekend ?
Person1: We will need it for both days .
Person2:We will need to know who will be driving the van .
Person1: The van will be driven by Mary and me .
Person2:It needs to be back on Sunday night . Can you arrange for that ?
Person1: Oh yeah , no problem . Would you mind if we borrowed a few of the chairs from the lunchroom .
Person2:Just keep track of everything and get it all back where you took it from by Sunday evening .
formal