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: darrys cookhouse and wine shop's address is 40270 King Street City Centre. Sentence2: Yeah, Tuesday. Thanks. Sentence3: The restaurant should serve romanian food Sentence4: that is it for today thanks for helping Sentence5: cambridge. get me the travel time Sentence6: Glad to help enjoy your day. Sentence7: There are trains on the :08 every hour on Tuesday. The one closest to your arrival time leaves cambridge at 16:40. It's a 28 minute journey. Sentence8: No, thanks, I just need the address of one of them, please. Sentence9: I will also need your departure city. Sentence10: do you have a day that you want to travel on ? Sentence11: I need a train to get to stansted airport by 17:30 Sentence12: I show three expensive European restaurants in the centre. Would you like a reservation for one of them? Sentence13: What about something that serves european food? Sentence14: What type of food would you like? Sentence15: There are no expensive Romanian restaurants in the centre could I look fore something else. Sentence16: I also need the name and number of an expensive place to dine in the city center. Whatever you recommend. Question: Who has spoken the sentence 3? (A) User (B) System
Output: 


Answer: (B) System