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: Not really. Would you be able to recommend one? Sentence2: Yes, thanks! Can I also get a taxi from All Saints to the Golden Curry? I need to make sure I make it there by the reservation time. Sentence3: No. As long as its in the same area, please book me a table for 2 at 15:00 for monday. Sentence4: All Saints Church has great architecture and is free. Sentence5: You're all set! You'll be picked up by a blue Volvo; the contact number is 07138116280. Can I help you with anything else? Sentence6: No, thank you. I think I have everything I need at this time. Sentence7: Thank you for using our services. Have a wonderful day! Sentence8: There are lots of attractions in the centre! Do you have a specific type in mind? Sentence9: Great! How about the golden curry, expensive price range restaurant in city centre. I have made reservations as requested. Your reference #aycp806a . Will this work? Sentence10: Sounds great. Can I get their address and phone number please? Sentence11: i am looking for attractions in the centre part of town. Sentence12: I am also looking for an Indian restaurant in the same area. Sentence13: All Saints is on jesus lane, phone is 01223452587 Sentence14: There are several, do you have a particular price range in mind? Question: Who has spoken the sentence 2? (A) User (B) System
Output: 


Answer: (A) User