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: Yes! City Centre North B and B is an inexpensively-priced guesthouse in the north of town at 328A Histon Road. Would you like to book a room? Sentence2: Certainly! How many tickets would you like? Sentence3: Please book that train for me now. Sentence4: I can find one for you. Can you tell me what day you would like to travel, please? Sentence5: They weren't able to accommodate those parameters. Would you like to try a shorter stay? Sentence6: The train should arrive by 14:45 and should be on the same day as the hotel booking. Sentence7: Great, I recommend train TR5108. It departs at 13:29 and will get you there by 14:07. Would you like me to book it? Sentence8: I am looking for information about the City Centre North B and B hotel. Can you help me with that? Sentence9: I need 6 tickets for the same day. Sentence10: You're welcome! Lovely day to you. Sentence11: That's all I need today, thank you. Sentence12: Great! I also need a train from bishops stortford to cambridge, please. Sentence13: The booking for City Centre North B&B has been made, your reference number is 0FAFY5PP . Sentence14: Booking was successful, the total fee is 48.48 GBP payable at the station . Reference number is : GSTIN0L6 . Sentence15: Sure. Let's try 2 nights. Thanks. I'll need a reference number, too, please. Sentence16: Yes can I book it for 6 people starting on Saturday for 4 nights please? Question: Who has spoken the sentence 10? (A) User (B) System
Output: 


Answer: (A) User