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 5 colleges in the west. The entrance fees are free or 2.50 pounds. Do you have a preference? Sentence2: I also need a taxi that will get me from the college to the restaurant by 16:45. Sentence3: I think it would be great to try European food. Do you think they would accept a reservation for a party of 7? Sentence4: Yes, for 7 people at 16:45 on Monday. I need a reference number. I need a taxi to commute also a place to visit as well as car type Sentence5: I'm also looking for a college to visit in the west. Sentence6: Okay, you are welcome and enjoy your time in Cambridge! Sentence7: Yes! Would you like to book a table? Sentence8: pick one that is free and give me the address and phone number Sentence9: galleria serves european food in the centre. It is of moderate price. Would you like a phone number or the address? Sentence10: Booking completed! Booked car type : black honda Contact number : 07095717275 Sentence11: Thank you. That's all I need for now. Sentence12: magdalene college is on magdalene street, and their number is 01223332138. What else can I help with? Sentence13: Your table at Galleria is reserved, and your reference number is XM58B7FS . Now, let's see about your other needs - what type of place would you like to visit? Sentence14: Please find a restaurant called Galleria. Question: Who has spoken the sentence 13? (A) User (B) System
Output: 


Answer: (B) System