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: Can you tell me if they have free internet and the star rating for each? Sentence2: Ah, here it is. It's an expensive gastropub restaurant in the east. Would you like to make a reservation? Sentence3: I was able to book that, reference number is GTZ8UVJO . Sentence4: thanks. i need to get going so, its time to say goodbye. have a good one. Sentence5: I also need a restaurant. Sentence6: I'm sorry but it must have closed as I am not finding any information on it. Can we look up another venue for you? Sentence7: Well I would like a guesthouse. Does that limit what area I can book in? Sentence8: There are moderately-priced guesthouses in 4 areas. Most have free parking, two don't, but if parking doesn't matter, any of them should do; Archway House in the north is very nice. Sentence9: There are nine restaurants in the north area. Do you have a preference of food type? Sentence10: I've booked a black ford with a contact no. 07568876193. It should arrive by 19:00 15 minutes before the booked time. Sentence11: Can you help me find a place to stay in the moderate price range. It doesn't need parking. Sentence12: Thanks! I also need a taxi to take me from Archway House to the restaurant for that reservation, please. Sentence13: I have 4 but need to know what area you would like to stay in? Sentence14: That's unfortunate. Are you certain you can't find it? I was sure it's still operating. Sentence15: Actually, I have a certain restaurant in mind. It's called Royal Standard. Can you tell me about it? Sentence16: The east and the north. Sentence17: Can I look up anything else for you today? Sentence18: Yes. I need a table for 4 people at 19:15 on Sunday. Question: Who has spoken the sentence 2? (A) User (B) System
Output: 


Answer: (A) User