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 would like to go to a museum. Sentence2: I have train TR9386 that will depart at 15:00 and arrive at 15:51. Does that sound like it would work for you? Sentence3: No, that will be it! Thank you! Sentence4: I would recommend the museum of classical archaeology. It's in the west side on sidgwick avenue. The phone number is 01223335153. Do you need anything else? Sentence5: How much does train TR9386 cost as I would prefer that one? Sentence6: There are approx. 10 trains for that day and route. Can you tell me if you have a time you want to leave after or arrive by? Sentence7: It costs 18.88 pounds. Would you like me to book a ticket for you? Sentence8: Cambridge offers 23 museums. Is there an area of town you'd prefer? Sentence9: I am also looking for a train that should leave on sunday and go to london kings cross. Sentence10: Yes, the TR7447 Leaves at 13:00. How many tickets please? Sentence11: No, just the one you like. I will need the address and phone number. Sentence12: The train should depart from cambridge and should leave after 13:00 Sentence13: is there anything that leaves closer to 13:00?? Sentence14: Glad I could help you. Have a good day! Question: Who has spoken the sentence 12? (A) User (B) System
Output: 


Answer: (A) User