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 will go ahead and book 6 tickets. Sentence2: I have trains leaving every 2 hours starting at 05:39 a.m. and a ticket will cost you 16.60 pounds.Would you to book a ticket? Sentence3: Hi, I'm looking to book a train that will depart from London Liverpool Street. I need the ticket for Monday. Can you give me available times? Sentence4: Thank you, that will be all for today. Sentence5: I would recommend TR3183 which leaves London Liverpool Street at 17:39 and arrives in Cambridge at 19:07. Sentence6: I have made those reservations and your reference number is T7CK2MLJ . Sentence7: I'm not sure when I need to leave, but I would like to arrive by 20:00. Sentence8: Hamilton Lodge is a guesthouse in the north that is moderately priced, rated 3 stars and has free parking and internet. Would you like me to book this for you? Sentence9: yes for sunday please 4 nights for 4 people Sentence10: I have quite a few trains leaving London Liverpool St. What time would you like to leave? That will help me find one. Sentence11: That you and whhat is the reference number ? Sentence12: Your reference number is A70RK1W1 and 99.6 GBP is payable at the station. Can I help with anything else? Sentence13: That would work perfectly! Can you book me 6 tickets please? Sentence14: Yes please. I'm looking for information on the Hamilton Lodge. Sentence15: I would like to leave London Liverpool on Monday. Sentence16: enjoy your stay Question: Who has spoken the sentence 3? (A) User (B) System
Output: 


Answer: (B) System