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: What type of food are you interested in? Sentence2: that is all the information I need today thank you. Sentence3: Okay. Why type of food do they serve and I need the postcode then too please Sentence4: Great. Thanks for your assistance! Sentence5: Do you have any attraction type in mind? Sentence6: I am looking for information on attractions in the west side of town. Sentence7: Not really, but I do need a postcode. Sentence8: You can visit the Cambridge and County Folk Museum, it is located at 2-3 castle street and the admission price is 3.50 pounds. Sentence9: You're welcome. Have a great day. Sentence10: You are welcome. I forgot to get you the postcode for Cambridge County you asked for. It is cb30aq. Will that be all for today? Sentence11: thanks! can you help me find a restaurant in that area? I want to spend a lot of money Sentence12: I would suggest graffiti Sentence13: I'm open to suggestions. Sentence14: Graffiti serves British food, and they're located in postcode cb30lx. Question: Who has spoken the sentence 10? (A) User (B) System
Output: 


Answer: (A) User