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: Great, you're booked with reference number EZAWT5OG . May I help with anything else? Sentence2: Sounds great, but I actually would prefer to maybe visit a college campus. Can you recommend one? Sentence3: The postcode is cb58bl. Is there anything else I can assist you with? Sentence4: Yes, I can. How about Scudamore's Punting Co.? It is located in the centre of town so it would be close to your restaurant. Sentence5: I sure would, thanks. Sentence6: The Varsity Restaurant serves international food at moderate prices. They are located in the centre. Would you like help in making a reservation? Sentence7: I am traveling to Cambridge and am super excited to see some of the local tourist attractions and I am looking for a restaurant call The Varsity Restaurant. Sentence8: Yes, I need a taxi to take me from the college to the restaurant. I want to make sure it arrives by my reserved time. Sentence9: Booking completed! Booked car type : red audi Contact number : 07727861490 is there anything else i can help you with? Sentence10: I am sorry but I was unable to book you at that time. Would you like to try a different time? Sentence11: Could we make it for 14:00. Sentence12: I'm also looking for places to go in town. Can you assist me with that also? Sentence13: Yes that time is available, would you like me to book that for you? Sentence14: I have five places. Jesus college is a good one, what would you like to know? Sentence15: Yes please. Can you make it for 7 people on sunday at 15:00? Sentence16: Can I get the postcode? Question: Who has spoken the sentence 6? (A) User (B) System
Output: 


Answer: (A) User