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: I'm sorry, the only moderately priced hotel does not have free parking. However, there is a 4 star inexpensive hotel that has both free wifi and parking? Sentence2: There are 7 guest houses and 2 hotels that are in the north in the moderate price range. Do you have a preference for type or number of stars? Sentence3: Ok, and what day would you be traveling? Sentence4: Thank you for you help> Sentence5: Not right now, but I do need the travel time and fare, please. Sentence6: Sure, do you have a specific price range in mind? Sentence7: What time would you like to depart Peterborough? Sentence8: in the moderate price range please with free parking Sentence9: I need a place to stay while I'm in Cambridge. Can you recommend some place in the centre of town? Sentence10: I want to leave after 11:45. Sentence11: The travel time is 50 minutes and the fare is 13.20 pounds. Can I help you with anything else? Sentence12: Sunday, thank you. Sentence13: I'll take the first one you have listed, and I need to know the star rating, phone number, and postcode please. Sentence14: The acorn guest house meets your criteria. It is 4 stars, phone number 0122335388, and postcode is cb41da. Shall I book a room for you? Sentence15: You are very welcome! Have a safe travel! Sentence16: How about one in the north area? Sentence17: Train TR9345 leaves at 12:19 and arrives at 13:09. Would you like to book it? Sentence18: No I just needed that information. I am also looking for a train from Peterborough to Cambridge. Sentence19: Not a problem at all. Sentence20: That was all, thank you for your help today! Question: Who has spoken the sentence 13? (A) User (B) System
Output: 


Answer: (B) System