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: I would like a guesthouse in the moderate area, I don't care about free parking, I won't be bringing my mercedes on this trip. Sentence2: Yes, I'm looking for a place to stay while I'm in town. Sentence3: cb12dp. Is there anything else? Sentence4: you are so welcome Sentence5: a and b guest house would suit your needs. Could I make a booking for you? Sentence6: i will be sure to call you if i need your services Sentence7: I suggest acorn guest house, it is a four star guesthuse in 154 chesterton road. their number is 01223353888 and code is cb41da. Sentence8: a and b is not in the north, but there a few guesthouses in the north. Do you care for free wifi? Sentence9: Great! What is their postcode? Sentence10: No, thank you. However, will you please tell me the postcode? Sentence11: We have many fine accommodations in town! What are you looking for in a place to stay? Sentence12: Their post code is cb30ag. Is there anything else I can help you with? Sentence13: Thanks, that is all I need. Sentence14: Thanks for using our services, have a lovely day. Sentence15: Internet doesn't matter to me. Any guesthouse in the north that you recommend will be fine. I'll just need the phone number, star, and postcode. Sentence16: it was a pleasure serving you. Sentence17: YOu too thanks so much. Sentence18: Oh sure thing! That's a huge college campus in the west side of town. They are located on Magdalene Street and have free admission. Sentence19: I need information on a place called Magdalene college. Sentence20: Could you tell me now many star rating that has? Is it in the North? I forgot to say I need it there. Question: Who has spoken the sentence 8? (A) User (B) System
Output: 


Answer: (A) User