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: Oh, yes. The center, please. Sentence2: Yes, I'd like to have the address, phone number, and entrance fee, please? Sentence3: Centre, please. I want a type of hotel and free parking and free wifi, please. Sentence4: No problem! 01223446100, gonville place, no entrance fee listed though. Sentence5: I have 4 results for that, 2 are expensive and 2 are cheap. Which price range do you prefer? Sentence6: Sure I have so many options. Is there an area of town you would like to stay in? Sentence7: I also need a swimming pool to go to. Sentence8: A grey audi will pick you up at Alexander Bed and Breakfast at 04:00 and take you to Parkside Pools. If you need to contact the driver, call 07011763423. Sentence9: I think that is all that I need thank you for your help today. I appreciate it. Sentence10: i need a place to stay Sentence11: It does not matter. Just make a suggestion and please provide the address. Sentence12: As I said before, I want to go from my hotel to the swimmingpool Sentence13: I need to leave the hotel by 04:00 Sentence14: What time will you need the taxi to arrive? Sentence15: enjoy your stay in our lovely city! Sentence16: Parkside Pools is also in the centre of town. would you like more info? Sentence17: Where would the taxi pick you up from? Sentence18: I have a 4 star guesthouse in the cheap price range. It's located at 56 Saint Barnabas Road. Can I book for you? Sentence19: I'm happy to help you find something. To start, do you have a certain area of town in mind? Sentence20: I also need a taxi to commute between the two places. Question: Who has spoken the sentence 11? (A) User (B) System
Output: 


Answer: (B) System