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: A blue Volvo will pick you up at the pizzeria. The contact number is 07889066606. Is there anything else I can help you with? Sentence2: How about Christ's College? It's located in the centre of town at Saint Andrew's Street. Sentence3: Can I book a taxi from Christ's College to Don Pasquale Pizzeria? Sentence4: Certainly. The postcode is cb23nj. Sentence5: Sure. When will you need the taxi? Sentence6: That sounds great! What's the postcode? Sentence7: The postcode is cb23bu. Anything else I can find for you? Sentence8: Could you look up Don Pasquale Pizzeria for me? I'd like to know the postcode. Sentence9: I'm sorry, but I'm experiencing a system error. Can you please restate your request? Sentence10: Certainly. The town has many colleges to look at. Is there any particular area of the town you'd like to narrow it down to? Sentence11: No, that will be all. Thank you. Sentence12: Uh, I want to find a place to go in town. I really want to look at some of the colleges. Sentence13: Not really. Any college would be great. Sentence14: Actually I need to go from the restaurant to the college. I'd like to leave by 7:15. Sentence15: You're very welcome. Thank you and goodbye! Sentence16: I need to find a hotel in the south please Question: Who has spoken the sentence 1? (A) User (B) System
Output: 


Answer: (B) System