Definition: You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.

Positive Example 1 -
Input: Sentence1:i need a place to dine in the center thats expensive Sentence2: I have several options for you; do you prefer African, Asian, or British food? Sentence3: Any sort of food would be fine, as long as it is a bit expensive. Could I get the phone number for your recommendation?Question: Who has spoken the sentence 2? (A) User (B) System
Output: Answer: (A) User

Positive Example 2 -
Input: Sentence1: Guten Tag, I am staying overnight in Cambridge and need a place to sleep. I need free parking and internet. Sentence2: I have 4 different options for you. I have two cheaper guesthouses and two expensive hotels. Do you have a preference? Sentence3: No, but I'd really like to be on the south end of the city. Do any of those fit the bill? Sentence4: Sure. Does price matter? We can narrow it down and find exactly what you need. Question: Who has spoken the sentence 4? (A) User (B) System
Output: Answer: (B) System

Negative Example 1 -
Input: Sentence1: I am looking for a hotel named alyesbray lodge guest house. Sentence2: i have their info, what would you like to know? Sentence3: I would like to book a reservation for it. Can you help me with that? Sentence4: I sure can. First, I will need to know when you want your stay to begin and how many days you'll be staying. Also, how many people will be staying? Question: Who has spoken the sentence 1? (A) User (B) System
Output: Answer: (A) User

Negative Example 2 -
Input: Sentence1: Hi there! Can you give me some info on Cityroomz?. Sentence2: Cityroomz is located at Sleeperz Hotel, Station Road in the Centre area. It is a moderatley priced hotel with a 0 star rating. Would you like to book a room? Sentence3: Yes please. I need it for 7 people for 3 nights starting on tuesday. Sentence4: How many days would you like to book it for? Question: Who has spoken the sentence 4? (A) User (B) System
Output: Answer: (A) User

Now complete the following example -
Input: Sentence1: Thank you. Can you please confirm for me that the guesthouse you booked for me is moderately priced? Sentence2: Sorry, that booking is unavailable. Perhaps you'd prefer another day or a shorter stay? Sentence3: What day would you like to start your stay? Sentence4: Yes, please. We seem to have gone very astray. I need a moderately priced 3 star guest house. It doesn't matter where. Sentence5: Yes, can you give me the postcode and entrance fee for that museum? Sentence6: oh that definitely worked. I have booked you in and your reference number is KVJNZBG6 . Sentence7: No, sorry. I am looking for something moderately priced. Sentence8: Yes that will work, please book. Sentence9: How about 6 people for 5 nights starting friday? Sentence10: Okay, there are four available. How about Hamilton Lodge in the north? It's at 156 chesterton road cb41da with phone 01223365664. Would that work for you? Sentence11: Thank you! Are there any guesthouses nearby? Sentence12: Booking was successful. The reference number is 999S42AB . Anything else? Sentence13: I will need 3 nights for 2 people. Sentence14: Absolutely. There is no entrance fee for the Broughton House Gallery and the postcode is cb11ln. Sentence15: I'm sorry there are no moderately priced guesthouses in centre. Would you like to try something else? Sentence16: No, that should be it. Thanks! Sentence17: There are many museums in the centre of town, but I would recommend Broughton House Gallery. Could I be of further assistance? Sentence18: The Alexander bed and breakfast is located in the centre area. May I book this for you? Sentence19: Please book the Hamilton Lodge or 6 people and 5 nights starting from friday. Sentence20: I am looking for a museum to visit in the centre of town Sentence21: I would like to start my stay on Friday. Sentence22: I have confirmed your booking and you are are all set. Thank you for calling the Cambridge town info centre. Sentence23: It is actually cheaply priced. Is that going to be okay? Sentence24: Certainly. How long would you like to stay? Question: Who has spoken the sentence 8? (A) User (B) System
Output: 


Answer: (A) User