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'm looking for a restaurant in the center of town. Sentence2: I was hoping to find a place that serves Indian food. Sentence3: I am also looking for a place to stay in the same area and same price range. Sentence4: I have two hotel in the Centre, shall I book one? Sentence5: Both Gonville Hotel and University Arms Hotel have free wifi and are expensive options in the centre of town. Sentence6: I need an address and phone number for the restaurant. Sentence7: I am unable to find any Indian restaraunts in the the center of town. Can you narrow down your preferred area please? Sentence8: Can you book me at the Gonville Hotel ? I also need a taxi booked.I need the taxi number and car type. Sentence9: My apologies, I actually do not need the hotel booked, but I do need a taxi to commute between the hotel and the restaurant, leaving the hotel at 23:45. Sentence10: Okay, thank you so much. Goodbye. Sentence11: Okay you're all set for a car. There will be a white Volkswagen taking you from the Gonville to Curry Garden, leaving the hotel at 23:45. Their contact number is 07462048280. Sentence12: Does one not have free internet? Sentence13: Goodbye! Have a great day! Sentence14: I would recommend The Curry Garden in the city center. Sentence15: We have a lot of them. Any specific location? Sentence16: Their address is 106 Regent Street City Centre and phone is 01223302330. Is there anything else you require? Sentence17: I have 14 restaurants that serve expensive indian food. Is there area of town you would like? Sentence18: An expensive Indian restaurant in the centre, I will require the address and phone number please. Sentence19: I'm not getting any results for those specific, do you want to try something else? Sentence20: I'm really looking for an Indian restaurant in the expensive price range in the town centre. What can you recommend? Sentence21: Hello, can you recommend an expensive restaurant in Cambridge? Sentence22: Can you please give me the day you are starting your stay, number of days, and the number of people staying? Question: Who has spoken the sentence 4? (A) User (B) System
Output: 


Answer: (A) User