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: Unfortunately, I could not find a barbecue restaurant using your criteria. Is there another type of restaurant you would like to consider? Sentence2: If this guesthouse is available please book it for me. By the way, what is the price per night? Sentence3: I need a 3 star hotel in Cambridge, that offers a guesthouse, can you book it for me ? Sentence4: Great can you book that for 1 person for 3 nights starting friday? Sentence5: Before I book, is the guesthouse located in the south part of town and at what price range? Sentence6: Neither of the restaurants in the centre are available at that time. Would you like to try a different time? Sentence7: I do not have the prices, what day would you like to stay, for how many nights, and how many people? Sentence8: That is it for today. Thank you so much for your help. Good bye. Sentence9: thank you for booking that and the reference number Sentence10: Yes please, I need to book a taxi to the restaurant from the hotel for the dinner reservation. Sentence11: Thank you for using Cambridge TownInfo centre. Please remember us for all of your future travel needs. Sentence12: There are no modern European restaurants in the North but there are 2 in the town center. Do you want to book one or change type of restaurant. Sentence13: I was able to book restaurant alimentum reference number is HCY10A2Z Sentence14: How about 10:00 on the same day as before? Sentence15: Yes, I am also looking for a barbeque restaurant in the same area and price range as my hotel. Sentence16: I'd like to book one for the same group of people at 11:00 on the same day as before. Sentence17: Yes, hamilton lodge is located on 156 chesterton road. Sentence18: The hotel is found in the Northern part of town and it is in the moderate price range Sentence19: Is there anything else I can help you with today? Sentence20: Ok, a grey honda will pick you up at the hamilton lodge in time to arrive at restaurant alimentum for your 10:00 reservations. Taxi contact number is 07242149665. Anything else? Sentence21: Yes, are there any modern european restaurants in that area? Sentence22: i have your room all reserved. The reference number is R1E3QVGT . Is there anything else I can assist you with? Question: Who has spoken the sentence 1? (A) User (B) System
Output: 


Answer: (B) System