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: OK, TR1584 costs 17.60 pounds and leaves at 9:36. The travel time is 79 minutes. Would you like me to book it? Sentence2: No, I'll think about it. I will also need a place to stay 3 star please and free wifi. Sentence3: I'd like to go to Norwich. Sentence4: There are 202 trains leaving from Cambridge that day. Where would you like to travel to? Sentence5: There are no hotels with the moderate price range, but we do have three different guesthouse in the moderate price range with a 3 star rating. Sentence6: Yes, what moderate hotels are in the area? Sentence7: Cheap price range please Sentence8: There are 19 trains available on Thursday. What time would you like to travel? Sentence9: Glad I could be of service, goodbye. Sentence10: Fantastic, I have booked you at the Bridge Guest House. Your reference no. is 7XMDDV3L . Is there anything else I can help you with today? Sentence11: I would like to book a train from Cambridge on Thursday. Sentence12: I would like to leave on the first train after 9:30. Can I get the travel time, train ID and price please? Sentence13: No thank you goodbye. Sentence14: There are no cheap hotels with 3 stars and free wifi. Would you be interested in a moderately priced one instead? Sentence15: There are 5 hotels that meet your criteria. Are you looking for a certain price range or part of town? Sentence16: Can you book one for me? I need a room for 5 people starting on Monday. We would be staying 3 nights. Question: Who has spoken the sentence 3? (A) User (B) System
Output: 


Answer: (B) System