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: Okay great thank you. Sentence2: thanks, i also need a taxi to get me from the hotel to the restaurant. can you help? Sentence3: Of course, could you please give me the name of the Hotel you are looking for? Sentence4: Yes, I'm also looking for a restaurant called the rice boat. Sentence5: Have a great day! Sentence6: Rice boat is an expensive Indian food restaurant in the west, located at 37 Newnham Road Newnham. Sentence7: you will be riding in a grey audi and the contact number is 07939088518 Sentence8: I'm looking for the Express by Holiday Inn. Sentence9: This hotel is on the east side of town, rated 2 stars, and in the expensive pricerange. Do you need more information or can I book a room for you? Sentence10: I certainly ca. Your reservation number is ZK68BCKQ . Sentence11: Okay, I was able to get you the booking. Your reference number is SQ6GX5Q5 . Can I help you with anything else? Sentence12: Thank you! Please book a room for 6 people for 5 nights, starting on Friday. Sentence13: Can you help me out with some information on a specific hotel? Sentence14: Could you book me a setting there for the same group and day at 17:30? Question: Who has spoken the sentence 12? (A) User (B) System
Output: 


Answer: (A) User