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: There is one that arrives by 11:08 and it departs at 10:40. Would you like to book that? Sentence2: No. That's all I needed to know, thank you. Sentence3: Yes. Six people at 14:00 on Monday. Sentence4: great, what is your destination? Sentence5: I have 6 trains available departures starting 05:40 to 10:40. What time would you like to leave? Sentence6: I'm trying to find a restaurant by the name of ali baba. Can you help me out? Sentence7: My destination is the Stansted Airport on Tuesday. Sentence8: Can you just give me the departure time of the one that gets me to Stansted a little before 11:15? Sentence9: Thank you. Yeah, I'm also looking for find a train out of Cambridge that will arrive by 11:15. Sentence10: Sure! Ali Baba is at 59 Hills Road City Centre. Would you like to book a table? Sentence11: Ok, your reservation is all set. They will hold the table for 15 minutes. Your reference number is UXY6QBZY . Is there anything else I can help you with today? Sentence12: You're welcome, have a great day! Question: Who has spoken the sentence 1? (A) User (B) System
Output: 


Answer: (B) System