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: We have many trains heading to Cambridge on Monday. What is your point of departure for that day? Sentence2: I have train TR2013 leaving at 5:50 and arriving at 6:07. Would you like to make reservations for that? Sentence3: Sure. What's the postcode? Sentence4: What are the theatres options? Sentence5: In the centre, we have more than 40 attractions. Everything from museums, colleges, nightclubs, boating, theatres, etc. Is there something you have in mind? Sentence6: I want to go to ely and arrive by 11:15. Sentence7: Yes please. Make a booking for 6 people and send me the reference number Sentence8: I'm sorry for the confusion, just to verify-are you departing from Cambridge with Ely as your destination? Sentence9: There are four theatre options all in the centre. Would you like to try the Mumford Theatre? Sentence10: You are booked and ready to go. Your reference number is 9QJPHZUT . Is there anything else I can help you with? Sentence11: I need a train to cambridge on monday. Sentence12: your very welcome! Sentence13: Yes I need a place to go in the centre. Sentence14: No, sorry, I am traveling to Cambridge from Ely. Sentence15: Thank you for your help. Have a great day. Sentence16: postcode is cb11pt. Question: Who has spoken the sentence 1? (A) User (B) System
Output: 


Answer: (B) System