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: Alright, let's see what I have for you. Can you tell me what time you would like to leave or arrive by? That will help us narrow one down. Sentence2: You too, goodbye. Sentence3: No problem. The museum is located on sidgwich avenue. The postalcode is cb39da, and the phone number is 01223335153. Can I help you with anything else? Sentence4: Thank you for using Cambridge TownInfo centre. Please consider us for your future travel needs. Sentence5: No not really. Just something historical to see. Sentence6: The TR1233 leaves at 19:21 and arrives by 21:06, would that work? Sentence7: Great, I also need a train to leicester and traveling on friday. Sentence8: I'm looking for attractions in west Cambridge. Sentence9: The price per ticket on TR1233 is 37.80 pounds. Do you want me to book a seat for you? Sentence10: No, not at this time, thank you for your help. Sentence11: I have colleges and museums here. Do you have a preference? Sentence12: Yes, may I please get their address, postcode and phone number? Sentence13: Yes what would the price be? Sentence14: You're welcome have a great day Sentence15: You may enjoy the museum of classical archaeology located in the west part of town. Would you like more information? Sentence16: The train should arrive by 21:45 in Leicester. You can tell me which departure from Cambridge is best for that time. Question: Who has spoken the sentence 5? (A) User (B) System
Output: 


Answer: (B) System