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: Sure. Can you give me the names and addresses of the other 3 as well? Sentence2: Train TR7900 leaves cambridge for birmingham new street monday at 16:01. Your reference number is OCF8O3GJ . Sentence3: I am looking for a train. The train should leave on monday and should go to birmingham new street Sentence4: There are several trains available. Are you able to provide a specific time? Sentence5: Can you help me find a theatre in the centre of town? Sentence6: Have a great day! Sentence7: cambridge arts theatre is at 6 saint edward's passage, mumford theatre is at anglia ruskin enterprise, east road; and the cambridge corn exchange is at wheeler street. Sentence8: What is your departure time and location? Sentence9: Ok, great. That's all I needed. Thank you for all of your help! Sentence10: No, the first train after 15:15 will work. I need to book the trip for 8 people, and please include my reference number. Sentence11: Sure, there is cambridge arts theatre, it is located at 6 saint edward's passage. There are 3 others if you would like information on them as well. Sentence12: Leaving Cambridge going to Birmingham New Street on Monday any time after 15:15. Question: Who has spoken the sentence 4? (A) User (B) System
Output: 


Answer: (A) User