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: Do you have any other preferences, such as a price range or a particular part of town? Sentence2: Thanks. Now I just need a taxi to pick me up at 22:00 from the Huntingdon Marriott and take me to Clare Hall. I'll need car type and contact number Sentence3: You're welcome! Have a wonderful day! Sentence4: Indeed I do. I'd like a hotel in the expensive price range that's on the west side of town. The hotel should have a 4 star rating. Sentence5: I see many art galleries and museums in that part of town, do you have a preference for one over the other? Sentence6: I am looking for a college. Sentence7: Okay, I suggest clare hall. It is in the west. The address is herschel road. Entrance is free. Sentence8: So that's a hotel and not a guesthouse? And do they have free parking? Sentence9: Yes, it's a hotel that has free parking. Should I make a booking for you? Sentence10: Your car is booked. The care type is a blue toyota. Your contact number is 07372726556 Sentence11: It doesn't matter, pick one for me? I'll just need the address. Sentence12: Thank you. That is it for now. Sentence13: I am looking for a place to stay that has free wifi. Sentence14: There are several colleges,what part of town would you like ? Sentence15: No thank you. I also would like a place to go in town. Sentence16: Yes, the Huntingdon Marriott Hotel is a match! Would you like me to book a room? Question: Who has spoken the sentence 10? (A) User (B) System
Output: 


Answer: (A) User