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: That sounds great! Could I get the area and phone number of the Bed and Breakfast? Sentence2: There are 23 museums in town, would you perhaps be interested in the Broughton House Gallery? Sentence3: Nope that'll be it. Thanks. Sentence4: Have a Great Day! Sentence5: Yes, their number is 01223314960. Do you need directions, a taxi, or something else? Sentence6: I would like to visit something like a museum, no specific part of town. Sentence7: How about Alexander Bed and Breakfast? It is 4 stars and in the same part of town as the gallery. Sentence8: Ok, it is in the east part of town the post code is cb12dp and the phone number is 01223315702. Anything else I can help you with? Sentence9: If you could just pick one, it does not have to have free parking. Maybe close to the Broughton House Gallery. Sentence10: Yes I need to find a guesthouse, prefer with a 4 star rating. Sentence11: There are 18 four star guesthouses listed, what area of town are you interested in? Sentence12: That sounds great. Can I please have the phone number? Question: Who has spoken the sentence 1? (A) User (B) System
Output: 


Answer: (B) System