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: The centre is my preference. Thank you. Sentence2: I want to stay near the restaurant if possible. Oh and they should have internet please. Sentence3: Please book clowns cafe. Sentence4: Sure, stazione restaurant and coffee bar, clowns cafe, don pasquale pizzeria, cafe uno. Sentence5: Thank you. You as well. Sentence6: I would like to go to an expensive Italian restaurant for dinner. Sentence7: 11:45 as discussed above. Sentence8: Just make sure I get to the locations by the booked time. Sentence9: Can you tell me the names of those four? Sentence10: Have a nice day. Sentence11: Their postcode is cb11ly. If you want to make a booking, then I need to know what day you'd arrive, how many nights you'd stay, and how many people. Sentence12: I also need an expensive hotel to stay at. Can you help me find one? Sentence13: Great and can I get a taxi to commute between the two places. Sentence14: Yes it does. Sentence15: Which one would you like me to book it for? Stazione, Clowns Cafe, Don Pasquale Pizzeria, or Caffe Uno? Sentence16: What area would you like to stay in? Sentence17: I would be happy to find a taxi for you. I just need to know when you want to leave by and when you would like to arrive. Sentence18: I've made those reservations your reference number is WIPPGG4I . Sentence19: I'd recommend the Gonville Hotel. It meets your criteria. Would you like to make a booking? Sentence20: Lets finish your hotel booking first, okay? How many rooms will you need and for how many nights? Beginning which day? Sentence21: I don't need a booking, thanks. I do need a taxi going from the hotel to the restaurant though. Sentence22: Does it have internet? Sentence23: I'll need to know when you need to be picked up or dropped off. Sentence24: I have four places fitting that criteria. Would you like me to book one? Sentence25: yes and could i have the postcode please Sentence26: The taxi has been booked the contact number is 7384967913. The type of car is blue lexus. Sentence27: which area of town are you interested in dining in? Sentence28: book for me Sure. a table for 8 people at 11:45 on wednesday and get me the reference number Question: Who has spoken the sentence 4? (A) User (B) System
Output: 


Answer: (A) User