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: Cambridge has many colleges in the center of town. Downing College is nice, and it's free to get in. Sentence2: I'm looking for a proper hotel, please. If it had free wifi, well, I wouldn't complain about that either. Sentence3: The reference number is 75625428 . Anything else? Sentence4: I would like to have the reference number for the room booking please. Sentence5: The address for downing college is regent street. Have a great day. Sentence6: Alright, your room is booked for the Ashley Hotel for 5 nights with 6 people. Is there anything else I can do for you? Sentence7: I have confirmed your taxi a black lexus will be picking you up. Their contact number is 07864379890. Do you need further assistance? Sentence8: I would now like to book a taxi from my hotel at 06:15 going to the college. Sentence9: Actually, can I get the street address of Downing College before we go? Sentence10: The Ashley hotel is in the north and has both free internet and parking. Would you care to go here? Sentence11: I am looking for a hotel in the north to stay in. Can you help me with this? Sentence12: Yes. I want to check out a college in the centre. Sentence13: Yes, I want to book it for 6 people and 5 nights starting from sunday. May I also have the reference number? Sentence14: That sounds great. Can I get the address and postcode? Sentence15: There are 13 hotels in the north. Do you want a guesthouse or a proper hotel? Sentence16: It's in the centre of town and it's at cb21dq. Question: Who has spoken the sentence 8? (A) User (B) System
Output: 


Answer: (A) User