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 want to leave the hotel at 23:15, a midnight swim would hit the spot. Sentence2: Can you find me a spot to stay with free parking and a 4 star rating? Sentence3: Can I look up anything else for you? Sentence4: No but I do need the phone number and address. Sentence5: I have 4 different swimming pools in town. Is there an area of town you'd like one in? Sentence6: Booking completed! Booked car type : black volvo Contact number : 07411725780 Sentence7: I have no preference. Can you pick one for me? I'll need the postcode and phone number please. Sentence8: What time would you like the taxi? Sentence9: Thanks. Can you get me a taxi between the guesthouse and the swimming pool please? Sentence10: Is it a guesthouse and in the moderate price range? Sentence11: Have a nice day. Sentence12: I also need the name of a swimmingpool in town. Sentence13: No that's all, thank you. Sentence14: Sure, the address is 52 gilbert road and the phone number is 01223575314. Can I help you with anything else? Sentence15: That is all I need. Sentence16: Yes it's a moderately priced guesthouse located in the north. Would you like me to book you a room? Sentence17: parkside pools is located in the centre. The phone number is 01223446100 and the postcode is cb11ly. Sentence18: The Archway House is a four star hotel with free parking. Will that work? Question: Who has spoken the sentence 11? (A) User (B) System
Output: 


Answer: (B) System