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 information on the colleges in the centre please. Sentence2: Yes, that would work. I don't need a ticket though. But, can I ask the price per ticket? Sentence3: Yes, thank you very much. That will be all. Sentence4: i'm also interested in places to go in town. Sentence5: I have train TR1144 leaving at 5:36 and arriving at 6:55. Would you like to make reservations for that? Sentence6: What area would you be in? Sentence7: recommend any and give me the entrance fee and postcode Sentence8: Thank you for using our services. Have we met all of your needs? Sentence9: Thank you for calling and have a great day. Goodbye. Sentence10: What day and time do you want to travel? Sentence11: I have 13 results that match, is there anymore information you can give me on what you are looking for? Sentence12: Thanks, that's all I need for today Sentence13: Good evening, I need to take a train from Cambridge to Norwich. Sentence14: I want to leave on Wednesday and arrive by 15:30. Sentence15: gonville and caius college have free admission. Their postcode is cb21ta Sentence16: The price is 17.60. Can I help you with anything else? Question: Who has spoken the sentence 1? (A) User (B) System
Output: 


Answer: (B) System