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: That's perfect. That's all I need for now. Sentence2: I would like to take a train from Cambridge to Leicester. I have to get there for a dinner by 19:15. Sentence3: It doesn't matter, just pick the one you think is best! Sentence4: I have train TR4506 that leaves at 17:21 and arrives in Leicester at 19:06. Would this work for you? Sentence5: It is on Tuesday. Sentence6: yes those we have quite a few of, how can I help you? Sentence7: Okay, your trip has been booked. Train# TR4506. Leaving at 17:21, arriving at 17:06. Total cost is 37.79 GBP payable at the station. Your reference number is 244DG7UO Sentence8: Clare college is a nice place and phone is 01223336233 Sentence9: Can you possibly find me a swimming pool in the West? Sentence10: Do you need free admission or pay to get in? Sentence11: how about one that is in the type of college? Sentence12: Any you suggest will be fine. I'll just need the postcode, phone number, and entrance fee, please? Sentence13: I can help with that. What day is your dinner? Sentence14: There are no swimming pools in the west. Question: Who has spoken the sentence 12? (A) User (B) System
Output: 


Answer: (A) User