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: That would be great. I'll need it booked for 1 person for 5 nights starting on Thursday. Will you provide me with the conformation number when that is complete? Sentence2: We are happy to help. Thank you for using our service. Have a great day! Sentence3: TR8207 arrives at 21:06. Would you like to book this train now? Sentence4: The Lensfield Hotel is a three star rated hotel with free parking and internet. Shall I book this for you? Sentence5: Thank you very much, could you help me find a place to stay? I am looking for somewhere in the south and it needs to have free parking. Sentence6: Thank you so much. That was all I needed today. Sentence7: There are 19 entries that match that response. Do you have a preference for time? Sentence8: There are quite a few options for this trip. What day would you like to travel? Sentence9: No, I don't want to book it. Could I get the departure time, though? Sentence10: I would like to leave on Tuesday, please. Sentence11: Booking was successful. Your reference number is 52B5WQ2U . Sentence12: I am looking for a train leaving Cambridge heading to Leicester Sentence13: I don't but the hotel doesn't need to include internet. Sentence14: It will depart at 19:21 Sentence15: There are 4 different hotels in that area with free parking, did you have a price range in mind? Sentence16: Yes. I would prefer to arrive as close to before 21:30 as possible. Question: Who has spoken the sentence 1? (A) User (B) System
Output: 


Answer: (B) System