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: Your total fee is 20.2 GDP, payable at the station. The reference number is ALEMIAWN . May I help with anything else? Sentence2: Great I also need to get a train on thursday to go to bishops stortford. Sentence3: Yes I want to leave from Cambridge after 14:30. I also would like the travel time and train ID if possible. Sentence4: I'm not sure. Sentence5: Sure TR7759 would work best with your request. That leaves at 15:29 and arrives 16:07. It does cost 10.10 pounds per ticket though. Sentence6: There are old churches, colleges, and art museums. Sentence7: Just to verify, my boss is a stickler for reimbursement things. It appears the travel time adds up to 38 minutes, is that accurate? Sentence8: That sounds perfect. I would like to book two seats. Sentence9: Is there a phone number that I can use to contact the Holy Trinity Church? Sentence10: There are 10 trains that day. Do you have a desired departure or arrival time? Sentence11: Very good, have a nice day! Sentence12: What type of attraction are you interested in? Sentence13: I really don't have a preference. How about old churches? Sentence14: The phone number is 01223355397. Sentence15: Great thank you that's all the info I need. Sentence16: I am looking for places to go in the centre. Sentence17: Correct, your trip from Cambridge to Bishops Stortford will take 38 minutes in total. Is there anything else I can help with today? Sentence18: How about Holy Trinity Church? It has a free entrance fee as well. Question: Who has spoken the sentence 12? (A) User (B) System
Output: 


Answer: (A) User