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 am looking for information in Cambridge Sentence2: I also need to find a train for Friday going to Cambridge from Norwich and leaving after 15:15. Sentence3: What about one in the moderate price range? Sentence4: TR8365 leaves norwich at 16:16 and will arrive in cambridge at 17:35. Would you like me to book you tickets for that train? Sentence5: Can I help you with anything else? Sentence6: Sure! the acorn guest house is a 4 star hotel with free parking and the address is 154 chesterton road. Sentence7: Might I recommend the Acorn Guest House? It meets your criteria. Would you like to make a booking? Sentence8: I was unable to find any matching places for that. Sentence9: Yes I do need the free wifi. Sentence10: I am looking for a guesthouse in the north. I would like it to be expensive and include free wifi. Sentence11: You're very welcome! Have a great day! Sentence12: Yes, that would be good. Can you just let me know the star rating of the hotel, whether they have free parking, and address? Thanks Sentence13: No need to book the tickets I just needed the info. Thats all I needed thanks Sentence14: No, that will be all. Thank you! Sentence15: Yes I have 8 guesthouses available in the moderate price range. Will you require free parking and wifi? Sentence16: I need some more specifics to help you. What type of information do you need? Question: Who has spoken the sentence 6? (A) User (B) System
Output: 


Answer: (A) User