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: Sounds great,and I will take it! Sentence2: On second thought, I'm actually looking for a hotel. Same criteria, but it needs to be in the moderate price range. Sentence3: Hello, I'm trying to find info about a particular attraction in town called adc theatre. Can you help me? Sentence4: Do you know the area the hotel is located in? Sentence5: Their contact number is 01223300085. It does not look like there is an entrance fee but I would call just to be sure. Sentence6: Yes please, including the postcode. Is there an entrance fee? Sentence7: Thanks! I also need a 4-star place to stay that has free parking. Sentence8: I have found 5 matches that meet your criteria. How about the acorn guest house? Sentence9: What area is it in? Sentence10: acorn guest house is in the North of town. Is there anything else? Sentence11: Would you like for me to try and make a reservation? Sentence12: Yes I can help you,I have locate adc theatre do you want the address? Sentence13: Acorn Guest House is at 154 Chesterton Road. Would you like more info, or would you like to go ahead and book it? Sentence14: Acorn guest house is a great fit! Want more info? Question: Who has spoken the sentence 10? (A) User (B) System
Output: 


Answer: (A) User