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: Absolutely. The phone number is 01223357708 and the postcode is cb21sj. Is there anything else I can help you with? Sentence2: I have TR2102 that leaves at 10:01 and arrives by 12:44. The ticket price is 75.10 pounds. And the travel time is 163 minutes. Anything else I can help with? Sentence3: sure! do you like museums? Sentence4: There are hourly trains Friday morning, you could take the TR5408 leaving at 7AM, arriving at 9:44. It costs 75.10 pounds. Does that work? Sentence5: No. I need the train on a thursday and it has to arrive by 13:45. Can you give me the departure time, price, and travel time for that train? Sentence6: Not really but I am departing from Cambridge and going to Birmingham New Street. Sentence7: Absolutely! Do you know which train station you would like to use? Sentence8: I've heard good things about the Primavera. And there is no entrance fee, so that's a bonus! Sentence9: Thanks for using our service today! Sentence10: That sounds great. Can you please provide me with the phone number and postcode. Sentence11: Yes, I enjoy going to museums. Can you recommend one? Sentence12: Hi, can you help me find a train? I'm in the planning stages of a trip there. Sentence13: That is all I needed today have a nice day. Sentence14: Yes, do you have any suggestions of places to go in the centre? Question: Who has spoken the sentence 1? (A) User (B) System
Output: 


Answer: (B) System