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 to leave after 18:30. Sentence2: Sure the travel time is 49 minutes. Would you like to make a reservation for that train? Sentence3: Can I get the travel time for that train? Sentence4: Yes, they have a room available for you and it's booked for 4 nights starting Tuesday, your confirmation number is VRN7SQL2 . Sentence5: That was all I needed today, thanks! Sentence6: Yes I would like a guesthouse in the north. Sentence7: The TR9082 departs at 19:21. Would you like me to create a booking for you? Sentence8: I would suggest the acorn guest house. Sentence9: You're very welcome! Have a great day! Sentence10: Can you help me find a place to stay that has free parking and free wifi? Sentence11: The trainID TR9082 and will leave at 19:21 and arrive at 20:10. The cost is 12.80 pounds. Sentence12: That sounds great do they have a room for just me? I'm checking in Thursday and will be staying 4 nights. Sentence13: No need to book. Can I please get the travel time for that train please? Sentence14: There is another train, TR6530, that leaves at 21:21 and arrives at 22.10. The cost is 12.80 pounds. Is there anything else I can help you with today? Sentence15: I am going to Stevenage. Sentence16: There is lots of places to stay. Do yo have any more preferences ? Sentence17: i am also looking fora train from cambridge on monday Sentence18: What is your destination? Sentence19: There are 10 available trains that day. Could you please provide me with your departure time and what time you would like to arrive by? Sentence20: Okay thanks so much. I appreciate the help. Question: Who has spoken the sentence 19? (A) User (B) System
Output: 


Answer: (B) System