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: there are several architecture places you could go, all saints church,great saint mary's church,holy trinity church, and old schools, which one could you prefer? Sentence2: It is a normal hotel and the phone number is 01223366611. Sentence3: Have a good trip at Cambridge. Goodbye! Sentence4: No can I just get the hotel type and phone number please? Sentence5: I'm looking for the gonville hotel. Sentence6: Gonville hotel is in the expensive price range in the centre would you like me to book it Sentence7: Old Schools sounds cool - can I have their phone number? Sentence8: You can contact Old Schools at 01223332320. Is there anything else I can assist you with? Sentence9: The taxi has been reserved. Your taxi would be a black honda and you can contact it at 07973129543. Sentence10: Hello, I'm looking for an architecture place to go in the centre of town. Sentence11: Thanks. Can I also book a taxi to take me from the hotel to the old school. I want to leave the hotel by 21:00. Sentence12: Thank you so much that's all i need. Question: Who has spoken the sentence 9? (A) User (B) System
Output: 


Answer: (B) System