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 have a few options on Friday with departures starting at 5:09 and recurring every hour. What time would you like to depart? Sentence2: Great, thanks! Can you also help me find a train to get me to Cambridge from Leicester? Sentence3: Your booking is successful, reference number is WLB1869A Sentence4: Can you pick one and get me 8 tickets please? Sentence5: which day will you want to travel? Sentence6: enjoy your stay in cambridge Sentence7: I would like Friday Sentence8: you can help me to book a table for 8 people at 16:45 on friday. Make sure you get the reference number with moderate price range Sentence9: How about spanish food? Sentence10: Find me a place to dine on some cheap foods from the americas please. Sentence11: Thanks, that's all I needed today! Sentence12: Booking was successful, the total fee is 302.39 GBP payable at the station . Reference number is : I0W8XGUW . Sentence13: It seems there are no cheap Spanish restaurants either. Can I help you with anything else today? Sentence14: I am sorry but I am not finding any results for the Americas. Is there another food type you would be interested in? Question: Who has spoken the sentence 1? (A) User (B) System
Output: 


Answer: (B) System