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 be happy to help. Those trains leave every hour, starting at 05:11. How early do you want to depart? Sentence2: I need a train going from Cambridge to Kings Lynn on Sunday. Sentence3: all saints church is very nice can I give you information on that one? Sentence4: Booking was successful, the total fee is 39.2 GBP payable at the station . Reference number is : 20RFDCGC . Sentence5: Sure. What would you like to know ? Sentence6: Can you help me find an architecture attraction to visit? Sentence7: Yes please, what area of town is it in? Sentence8: anything after 13:00 please Sentence9: It is in the centre and it's free. Sentence10: I am looking for information in Cambridge Sentence11: Yes, I can help with that. There are 5 attractions in the center of Cambridge, 4 are churches and the other is an old school. 4 are free and 1 costs 2 pounds. Do you have any preferences or would you simply like a random recommendation? Sentence12: That's perfect please make a booking for 5 and then let me have the reference number. Also can you help me find an architecture attraction? Sentence13: Sounds great. That is all I needed. Bye. Sentence14: Okay perfect. Have a great day, goodbye. Sentence15: Just give me a recommendation please. Sentence16: I have the TR8241 leaving at 13:11. Will that work? Question: Who has spoken the sentence 5? (A) User (B) System
Output: 


Answer: (B) System