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: The same day. Sentence2: Thanks. I am also looking for a restaurant that serves lebanese food in the centre. Do you have any suggestions? Sentence3: No thank you that will be all Sentence4: Yes can you please book that? Sentence5: Well, then I really want to stay with something cheap. How about indian food? Sentence6: I recommend kohinoor, they are indian with a cheap price, would you like more info or a booking? Sentence7: I'm looking for a place called kambar, can you help me? Sentence8: Is the Ali Baba cheap? Sentence9: the address is 74 Mill Road City Centre, and the phone number is 01223323639. Can I get you anything else? Sentence10: Certainly! Their phone number is 01223842725 and postcode is cb23qb. Can I help with anything else? Sentence11: The ali baba is a very nice one. Should I book it for you ? Sentence12: I do not need a bus, have a nice day thanks for the restaurant information. Sentence13: No problem is there anything else I can help you with today? Sentence14: Sure. What day would you like to go? Sentence15: Yes. I need their address and phone number as well. Sentence16: Can I get the postcode and phone number for them please? Sentence17: Sure! It is a nightclub located in the centre of Cambridge. The address is 1 Wheeler Street and admission is 5 pounds. Do you need more information? Sentence18: I'm sorry but I need the travel day to look that up for you? Sentence19: How many people and for what day? Sentence20: thank you for using this service good bye Sentence21: It is in the moderate price range. Would you like a booking? Sentence22: Can you tell me which bus i can take to the restaurant? Question: Who has spoken the sentence 16? (A) User (B) System
Output: 


Answer: (A) User