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: I'd like some help finding a train leaving peterborough on tuesday. Sentence2: I have train TR1674 leaving at 10:48 and arriving at 11:38. Would you like to book tickets? Sentence3: OK, is it going to Cambridge? Can I have the reference number please? Sentence4: Unfortunately, there are no trains that leave after 10:15. Sentence5: Okay. Your train booking was successful. You'll owe 16.5 which can be paid at the station. The reference number is X58GNQ74 . Sentence6: I have it right here Sentence7: Okay what are the available train times? Sentence8: Leave after 10:15, please. Sentence9: The address is 138 perne road. Would you like to book a room? Sentence10: I need a train from Peterborough to Cambridge on Tuesday, leaving after 10:15. Sentence11: Have a nice day. Sentence12: there seems to be a break down in communication. Please restate the departure and arrival locations and the day and time. Sentence13: Absolutely, do you want to leave or arrive by a certain time? Sentence14: it is 138 perne road. Sentence15: i have booked you one leaving at 10.19. Sentence16: Can you look up a hotel called Carolina bed and breakfast? Sentence17: No, I just need the address. Thank you. Sentence18: I need to book for one person, I will need the reference number. Also, I need to book a hotel called Caroline Bed and Breakfast, I need the address. Sentence19: Well, thats great. That means you should be able to give me the address Sentence20: Thank you, have a wonderful day. Let us know if we can help in any way. Question: Who has spoken the sentence 4? (A) User (B) System
Output: 


Answer: (A) User