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: Sounds great, can I have the phone number, entrance fee, and the postcode please? Sentence2: I'm also looking for a place to eat in the same area. Sentence3: how about 14:45? Sentence4: Yes 14:45 works! You table will be reserved for 15 minutes. Your reference number is DG9TSIVA . Is there anything else I can help you with? Sentence5: There are five options. Great Saint Mary's church is a great option. Sentence6: Unfortunately that's already been booked. Would you like to try another time? Sentence7: That's not necessary. I want to book a table for 1 person at 15:45 on Saturday. Sentence8: Could you find me something moderately priced, please? I'm not picky about what it is. Sentence9: Great St Mary's Church entrance fee is 2 pounds, their phone number is 01223350914, and the post code is cb23pq. Sentence10: There are 69 restaurants in the city centre. Is there a type of food or price range you would prefer? Sentence11: Hi, I'm looking for something to do in the centre of cambridge that would be entertainment based. Sentence12: The yipppee noodle bar serves Asian food in the city centre and is moderately priced. Would you like the address and phone number? Sentence13: I'm sorry, I have no entertainment listings in the city centre. Would you like to try another area? Sentence14: No that's it, you've been great, thank you! Sentence15: I'm glad I was able to help. Please call back if you have any more questions! Sentence16: Could you find some interesting architecture then? Question: Who has spoken the sentence 9? (A) User (B) System
Output: 


Answer: (B) System