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: Happy to be of service, and enjoy your time in Cambridge! Sentence2: the postcode is cb30af Sentence3: Thank you! Is it a European restaurant? Sentence4: cafe jello gallery is a nice place to visit. cambridge and county folk museum is nice too. Sentence5: Let's see...restaurant, museum...nope. That's everything I need! Sentence6: i need to find a place to go in the west Sentence7: There is the cambridge lodge restaurant, which is in the expensive price range. Address Cambridge Lodge Hotel 139 Huntingdon Road City Centre. Would you like me to book a table for you? Sentence8: Can you tell me about a couple museums, any type, and let me know the cost. Sentence9: Entrance into cafe jello gallery is free. Is there anything else I can help you with today? Sentence10: There are several colleges and museums in the west and one entertainment venue. What are you interested in? Sentence11: I found a nice restaurant for you called Saint Johns Chop House. It's not too pricey and tastes great! Sentence12: Is that located in the west? I forgot to mention I wanted to stay close to where the museum is. Sentence13: What is the entrance fee for cafe jello gallery? Sentence14: It is a british restaurant. Does that meet your needs? Sentence15: Yes it is in the west. Do you need anything else? Sentence16: I also need a place to eat near the attraction. Sentence17: No I would like to find European restaurant. Sentence18: Just the postcode. Thanks for all of your help! Question: Who has spoken the sentence 12? (A) User (B) System
Output: 


Answer: (A) User