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 have about 13 colleges in the centre of town. If I may, might I suggest Pembroke College. They have a quite unique campus. There is also free admission. Sentence2: Have a great day! Sentence3: No, that will be it. You've been very helpful! Sentence4: Golden House is a cheap Chinese restaurant in the center of town. Their address is 12 Lensfield Road City Centre, cb21eg. Their phone number is 01842753771. Sentence5: Pembroke College has a no entrance fee. Is there anything else I can help you with today? Sentence6: Yes, I do. I would like to find some interesting places to go while we are in town. Perhaps, some sort of entertainment. Any suggestions? Sentence7: Can you get me information on a restaurant called golden house? Sentence8: Booking was successful. The table will be reserved for 15 minutes. Reference number is : 4EYTD9X9 . Do you need anything else? Sentence9: I'd like to book a table for 3 at 20:00 on Monday. I'll need a reference number, please. Sentence10: It's located on Trumpington Street, postcode CB2 1RF. Would you like their phone number? Sentence11: Give me the entrance fee instead please. Sentence12: How about a college? Sentence13: Great. What's the address for pembroke? Sentence14: There are no entertainment attractions in the centre. Can I try another type of attraction? Question: Who has spoken the sentence 10? (A) User (B) System
Output: 


Answer: (A) User