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: No, and it also does not need free parking. Sentence2: Thank you. I am also looking for a nice expensive hotel. It does not need internet. Can you help with that? Sentence3: Yes, I would also like a taxi to take me between the Marriot and the museum. Sentence4: Thank you for all your help. I am all set now. Sentence5: Could you please give me the postcode, address and entrance free of a museum? Sentence6: Okay, I will need to book for 8 people for 4 nights starting from Sunday. Sentence7: You are all set for 11:15, the car will be a white audi and they can be reached at 07467849660 Sentence8: I will stay in the west area of town. Sentence9: Byard Art is a museum that has free admission. The address is 14 King's Parade and the postcode is cb21sj. Sentence10: Your booking has been completed! Here is your reference number VJUBQ1YN . Can I assist you with anything else? Sentence11: Ok, it was a pleasure assisting you. Have a wonderful day. Goodbye. Sentence12: Ok, I will contact the Mariott and get you all set up. Sentence13: There is a cinema, museum, park, theatre and nightclub. Would you like information for any of these? Sentence14: There are a total of 5 different places to stay that are expensive. Is there a certain area of town you would like to stay in? Sentence15: Oh, sorry! I would like to leave the museum by 11:15. Sentence16: Hi. I'm looking for something to do. Are there any entertainment attractions in the South part of town? Sentence17: Huntingdon Marriott Hotel and University Arms Hotel are both 4-star rated hotels. Would you prefer the West or the Center area of town? Sentence18: I will need a departure time or an arrival time between the two locations. Question: Who has spoken the sentence 5? (A) User (B) System
Output: 


Answer: (B) System