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: byard art is located in the south. The postcode is cb21sj and doesn't charge an entrance fee. Can I help with anything else? Sentence2: I also want to book a taxi to commute between the two places. Sentence3: Either will be fine Sentence4: I have 3 guesthouses and 1 hotel. Do you have a ratings preference? Sentence5: Lets try the south side. Sentence6: I'd like to be picked up at Byart Art museum by 21:00. Could you please book a taxi for me. Sentence7: I'm sorry I do want to stay at a hotel, not a guesthouse. I will just need the price range and post code please. Sentence8: Are you looking for a guesthouse or a hotel? Sentence9: I would like to go to a museum in the south. I need the postcode and entrance fee. Sentence10: Well I have a lot of places matching that description so can we narrow those choices by selecting an area for the hotel to be located in? Sentence11: What is your destination? Sentence12: That's all I need, thanks so much for all of your help! Have a great day! Sentence13: Okay! What kind of place would you like to visit? Sentence14: I want to go to the hotel. Sentence15: Okay, you're all set! You will be picked up in a yellow BMW. The contact number is 07193150653. Can I help you with anything else? Sentence16: the lensfield is nice its expensive and the postcode is cb21en, anything else today? Sentence17: I also need a place to stay at with free wifi and parking. Sentence18: i'm looking for places to go in town Sentence19: Sure, which place do you want to be picked up at and at what time? Sentence20: excellent, have a great day! Question: Who has spoken the sentence 19? (A) User (B) System
Output: 


Answer: (B) System