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: Could you give me the postcode? Sentence2: Their address is 2 norfolk stree. I am not sure of their entrance fee, they do not have it listed. Sentence3: I found quite a few. What kind of food would you like? Sentence4: You are booked! They will hold the table for 15 minutes. Your reference number is IX1RPSY3 . Can I help you with anything else today? Sentence5: I am looking for an expensive restaurant in the centre. Sentence6: The postcode is cb12lf. Is there anything else I can help you with? Sentence7: That sounds perfect! Can you book a table for 5 people @ 13:30 on Saturday? Sentence8: I'd like an expensive gastropub. Sentence9: No thank you, that is everything. Sentence10: I have the backstreet bistro in the centre of town, does that sound good? Sentence11: Can you tell me the postcode on that and the entrance fee? Sentence12: There are great concerts at The Man on the Moon concert hall. Their phone number is 01223474144, if you'd like to check coming attractions. Would that work for you? Sentence13: You're welcome! Just let us know if you need anything else. Sentence14: I would also like to know if there are any shows or concerts in town. Question: Who has spoken the sentence 10? (A) User (B) System
Output: 


Answer: (A) User