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: Thanks. I'd also like to find an interesting attraction in the same area as our restaurant. Sentence2: Any in the town centre? Sentence3: No that's the cheaper choice, La Mimosa and Shiraz Restaurant are both in the expensive price range. Sentence4: How about 14:00 on the same day? Sentence5: That sounds like a great suggestion. Thank you for your help today. Bye. Sentence6: I am looking for a restaurant that serves mediterranean food. Sentence7: I'll try Shiraz. Sentence8: Would you like a table at La Mimosa or Shiraz? Sentence9: Can you book a table for seven people on Thursday at 15:00? Sentence10: I can check on that for you. Yes, I was able to get your reservation set up for 14:00 for 7 on Thursday. Your reference number is O8HA0MSF . Sentence11: Alright, the address to the Holy Trinity church is market street, postcode cb23nz, phone number 01223355397 Sentence12: Can I assist you with anything else or will that be all for you today? Sentence13: Would you be interested in checking out some neat architecture? There are lots of church's in town, many of them are free to visit. Sentence14: I am sorry that was unsuccessful. Would you like book another day or time? Sentence15: Yes, all 3 are in the town center. Would the gardenia work for you? Sentence16: Yes, one of those would be fun. Can you get me their postcode and phone number? Sentence17: There are 3 choices do you want cheap or expensive? I can book one for you if you'd like. Sentence18: I definitely want someplace expensive. Does the Gardenia fit that description? Question: Who has spoken the sentence 16? (A) User (B) System
Output: 


Answer: (A) User