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: Sure! Can I get the postcode and phone number? I also need a train from peterborough that arrives by 9:45. Sentence2: Hmm, how about a nightclub? Sentence3: Monday, thanks. Sentence4: I want to find a place to visit in the centre in Cambridge please. Sentence5: May I please ask what the price and travel time of TR2118 is, please? Sentence6: I am going to Cambridge. Sentence7: I have several trains. The latest one is the TR2118 that arrives at 9:38. Would you like to book a ticket on that? Sentence8: I'm sorry, but I don't have anything like in town center. Cherry Hinton Village Centre is a multiple sports attraction in the east. Does that work for you? Sentence9: Ballare is available Sentence10: The price is 16.50 pounds. May I help with anything else? Sentence11: And the price? Sentence12: There are dozens of attractions in the centre of town. What type do you prefer? Sentence13: Yes TR2118 leaves at 08:48 and arrives at 09:38, it is a 50 minute ride. Sentence14: What day would you like to travel? Sentence15: Ballare is located in postcode cb23na and the phone number is 01223364222. And where would the train from Petersborough be arriving? Sentence16: I am looking for something like mutliple sports. Sentence17: Enjoy your visit and have a great day. Thank you. Sentence18: No thank you, you've been very helpful. Question: Who has spoken the sentence 7? (A) User (B) System
Output: 


Answer: (B) System