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. I also need info on a place to go in the west. Any one will do. Just something to see. Sentence2: You have a few attraction options in the west area; colleges, museums and even an entertainment attraction. Which one sounds best for your trip? Sentence3: I am planning a trip in Cambridge Sentence4: I can help plan your trip! What do you need? Sentence5: You're welcome! Have a great day! Sentence6: Okay. I've booked you three tickets on the TR9724. Your reference number is J87QHBRM . You'll owe 42.24 at the station. Sentence7: Can you recommend one and give their post code? Sentence8: There are 9 trains traveling from norwich to cambridge after that time on Saturday. Do you need to arrive by a certain time? Sentence9: No it doesn't matter when I get there. Can you pick one, and make me a booking for three people? I need a reference number too! Sentence10: I need a train ticket going to cambridge from norwich on saturday anytime after 15:00 Sentence11: How does the Clare Hall sound? The postcode is cb39al. Sentence12: That sonds great, thanks. Thats all I need for today. Question: Who has spoken the sentence 10? (A) User (B) System
Output: 


Answer: (A) User