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: Pizza Express Fen Ditton is located at Jesus Lane Fen Ditton. Is there anything else I can help you with? Sentence2: Yes. I would like to leave the restaurant by 11:15 and I would like to book a taxi to commute between the hotel and the restaurant. Sentence3: Yes please book the Archway House. Sentence4: There are several moderately priced restaurant in the centre area. Would you like a certain type of food? Sentence5: Yes, I would also l like to find a splendid, moderately-priced place to dine in the centre. That would be just wonderful if you could help me out with that! Sentence6: I'd like an Italian restaurant, please. Sentence7: I'm looking for something in the moderate price range actually. Sentence8: Yes, just give me the address please. Sentence9: I need a hotel with free wifi and free parking, thank you Sentence10: You are very welcome. Have a great day. Sentence11: Thank you very much! That's all I need today! Sentence12: Ok. I've booked that guesthouse for you. Your reference number is YBT4JRTR . Can I help with anything else? Sentence13: Not a problem! I booked a taxi to depart the restaurant by 11:15. The car type is a blue skoda and the contact number is 07621131070. Sentence14: I'd be happy to book for you. How many people will be staying, what is your arrival day, and how many nights are you staying? Sentence15: Allenbell is cheap and has free internet. Sentence16: Archway House is a moderately priced 4 star hotel in the North. Would you like to make a reservation? Sentence17: Pizza express Fen Ditton would be perfect for you guys then! Would you like more information or for me to book that for you? Sentence18: I will be arriving on tuesday and I need to book the room for four nights for three people. Question: Who has spoken the sentence 11? (A) User (B) System
Output: 


Answer: (B) System