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've got the alpha-milton guest house which matches your needs and is in the north. Would you like to book that? Sentence2: I also need to find Portuguese restaurant in the south. Sentence3: Not an exact price but it is moderate price range, do you want me to provide their info or book you? Sentence4: I'm looking for a 3 star rated place to stay at that doesn't need to have free parking Sentence5: What about modern European food? Sentence6: No thank you I just need information right now. I would like the address and phone number. Sentence7: Yes, give me their phone number and I will call them. Sentence8: I want something in the moderate price range. Sentence9: Nandos is a portuguese restaurant in the south area. Would you like a reservation? Sentence10: Restaurant Alimentum is moderately priced modern european cuisine and is located in the South. Shall I book that for you? Sentence11: What is the price range of that restaurant? Sentence12: The address is 152 - 154 Hills Road, postcode cb28pb. Is there something else I can help with? Sentence13: Can you tell me the price of the room per night? Sentence14: Sure, you can reach them at 01223311625. Can I help you further today? Sentence15: it's a fairly inexpensive restaurant. Sentence16: I have nothing that meets those requirements. Can I try something else? Sentence17: Thanks! I also need to book a taxi between my hotel and the restaurant, leaving my hotel by 04:30, please. Sentence18: You're welcome! Have a great day! Sentence19: Thank you. That is all that I need. Sentence20: Your taxi is booked. Be expecting a blue Volvo. Please call 07811154619 should you need to reach them. Question: Who has spoken the sentence 8? (A) User (B) System
Output: 


Answer: (A) User