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: Thank you. Do you also book taxis? I would like one from Saint Mary's to the Little Seoul. Sentence2: Little Seoul is on 108 Regent Street City Centre. Would you like a reservation? Sentence3: There is a lot to do in the centre is there a type of attraction you want? Sentence4: Hi, I am traveling to Cambridge and I am looking for things to do in the city centre. Can you help me find something to do? Sentence5: I want to leave the church by 1:00. Sentence6: No thank you. Can you provide me with their phone number? Sentence7: I have booked you a taxi. The car type is a yellow Audi and the contact number is 07332260834. Can I help with anything else? Sentence8: No that will be all for today. Thanks alot. Goodbye. Sentence9: All right. Great saint mary's church is one our many churches famous for Architecture. It's 2 pounds to get in, and their number is 01223350914. Sentence10: What time would you like to travel by taxi? Sentence11: I have no preference. Pick any for me and please tell me the attraction type, entrance fee and phone number. Sentence12: Their phone number is 01223308681 Sentence13: You're welcome! Have a great day. Sentence14: I am also looking for a restaurant that serves Korean food, and is located in the same area as Great saint mary's church. Question: Who has spoken the sentence 11? (A) User (B) System
Output: 


Answer: (B) System