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: Sure. Their phone number is 01223353888. Is there anything else I can help you with? Sentence2: Great! We have a wide variety of foods to try. Are you interested in a particular type? Sentence3: No thank you. Can you tell me the postcode, address, and phone number please? Sentence4: Ok, what days would you like to book your stay? Sentence5: There is a restaurant called the cow pizza kitchen and bar on Corn Exchange Street. Would you like me to book a table? Sentence6: Great, can I get their postcode, address, and phone number? Sentence7: How many people would you like to book this for? Sentence8: There phone is 01223353888, postcode cb41da and address 154 chesterton road. Would you like me to book there for you? Sentence9: I'm looking for a place to dine in the moderate price range and in the town centre. Sentence10: Actually I'm not sure yet how many people will be with me. Can you just give me their phone number for now? Sentence11: Acorn guest house looks like it matches your criteria, would you like to try that? Sentence12: No, I do not think so. Thank you for your help! Sentence13: Yes that would be great. Thank you. Sentence14: I would like to book it for 3 nights starting Friday. Sentence15: You are very welcome. Thank you for using Cambridge TownInfo centre! Sentence16: I'm looking for a place to stay that has 4 stars and is a guesthouse, what is there like that? Sentence17: The postcode is cb23qf. The address is Corn Exchange Street. And the phone number is 01223308871. Anything else I can help you with? Sentence18: I would like to try gastropub. Do you have one that serves that? Question: Who has spoken the sentence 14? (A) User (B) System
Output: 


Answer: (A) User