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 think we'd like to see a museum - do you have any recommendations? Sentence2: I am looking for information on a train that goes to Cambridge and arrives at 9:45 Sentence3: Their phone number is 01223312112. Is there anything else I can help with? Sentence4: That sounds perfect. What is there address? Sentence5: There are lots of nice attractions in town. Do you have a preference for type or area? Sentence6: Cafe Jello Gallery, 13 Magdalene Street, and there is no entrance fee. Is there anything else I can assist you with? Sentence7: Thank you and have a good day! Sentence8: The departure time is 07:39 for that train. Can I help you with anything else? Sentence9: I'm departing from London Liverpool Street and I want to leave on Tuesday. Sentence10: No that will be all. Thanks. Sentence11: Yes, can you tell me some good places to go while I'm in town? Sentence12: Okay great! I have one train that would get you to Cambridge on Tuesday by 09:07. Would you like me to book that for you? Sentence13: There are a few that arrive at cambridge by 09:45 what day are you arriving and where are you departing from? Sentence14: Do you have their phone number? Sentence15: There are 23 museums all around the city. If you don't have any area preferences, Cafe Jello Gallery on the west side is very nice, and they have no entrance fee. Sentence16: No I just need to know the departure time please. Question: Who has spoken the sentence 15? (A) User (B) System
Output: 


Answer: (B) System