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: 51 Trumpington Street City Centre and cb21rg Sentence2: I need a place to dine in the expensive price range serving north indian food Sentence3: There are 29 hotels with those criteria. What location would you like it to be in? Sentence4: Unfortunately booking was unsuccessful is there another time you'd like to go? Sentence5: I am traveling to Cambridge and looking for a local restaurant. Sentence6: There aren't any restaurants serving expensive north indian food. Sentence7: I would like it to be in northern cambridge and have 2 stars. Sentence8: There are two hotels that meet those criteria, the Ashley Hotel and the Lovell Lodge. Sentence9: You're welcome. Have a good day. Goodbye. Sentence10: Yes, i was able to book the ashley hotel for two days. Your reference number is 6OMRC62I . Can I help with anything else? Sentence11: yes less than 100 a night Sentence12: Hi! I am looking for a place to stay that has free wifi. The hotel doesn't have to have free parking but that would be nice. Sentence13: There are many listings. Do you have an area or price range preference to further narrow down? Sentence14: Actually, I'm all set. Thanks again. Goodbye! Sentence15: Ok great, thank you! Sentence16: There are 6 restaurants listed, do you have a preference of area? Sentence17: Are there any that serve british food? Sentence18: Is there anything else you need help with? Sentence19: Can you try for 2 nights? Sentence20: Try Ashley Hotel for 6 people, 3 nights, starting Monday. Sentence21: I have 6 restaurants that serve expensive British food. Would you prefer one in the east, west or centre area? Sentence22: Centre would be fine. Could you give me the address and postcode, please? Question: Who has spoken the sentence 1? (A) User (B) System
Output: 


Answer: (B) System