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: Could you please clarify your departure location and arrival destination? Sentence2: Coming to Cambridge from broxbourne on Friday. Sentence3: Okay thank you that's all I needed. Sentence4: Yes thank you. I'd like to stay in Cambridge. We're looking for a hotel with free parking and free wifi. Sentence5: I need information on a train as well. It should leave after 18:45. Sentence6: Do you have one in the east with an expensive price range? Sentence7: There are quite a few like that. If you're open to guesthouses , Limehouse in the north of town is nice. Or were there other features you were looking for? Sentence8: Your booking was successful! Your reference number is JBBPQWA1 . Is there anything I else I can help you with today? Sentence9: yes, please. For 6 people for 3 nights starting on friday. Sentence10: It was a pleasure serving you. I do so hope that your stay in Cambridge is pleasant. Goodbye! Sentence11: TR5056 costs 17.90 pounds and the duration is 60 minutes. Sentence12: I have train TR5056 that departs at 19:32 and arrives by 20:32. Would that be something that would work for you? Sentence13: Yes, on, Holiday inn Exlpress, Cambridge, shall I book it? Sentence14: Yes, that would work for me.I will just need the price, train id and travel time. Question: Who has spoken the sentence 9? (A) User (B) System
Output: 


Answer: (B) System