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: Actually, I just needed the tickets. That is all for now. Thanks. Sentence2: I can work on booking that for you. I will be back with you shortly. Sentence3: Not sure. I'm strapped for cash, is it in the cheap price range? Sentence4: Can you book one of them for 3 people? Sentence5: I would like to check in on Tuesday. Sentence6: You're welcome, have a great day. Sentence7: You are all set, the reference number is 439JME60, can I help you with anything else? Sentence8: What day will you be checking in and for how many nights? Sentence9: Acorn guest house is available, would that work for you? Sentence10: Yes I am looking at a train that departs Stansted Airport for 3 people. Leaves Tuesday and arrives in Cambridge by 16:30. Sentence11: Ok, what kind of information about Cambridge do you need? Sentence12: Were you able to book it? Sentence13: You booking for 3 tickets on the TR9892 was successful. Your Reference number is : U5A2ZTWU . Is there anything else I can help you with today? Sentence14: city centre north b and b is on the cheap side or worth house. Sentence15: For 5 nights please. Sentence16: I would like a hotel that is in the north, has free parking, and is a guesthouse. Sentence17: and how many nights? Sentence18: great, what area are you thinking of? Sentence19: Yes, that would be great. I'll need three tickets, please? Sentence20: Train TR9892 leaves at 5:24 and arrives by 5:52 would you like me to boko that for you? Sentence21: I need to find an indian restaurant. Sentence22: I am looking for information in Cambridge Question: Who has spoken the sentence 9? (A) User (B) System
Output: 


Answer: (B) System