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: Nearest the hotel will be fine, I also need a cab after the restaurant Sentence2: We have ten such places. Sentence3: Ok, can you try for just 1 night please? Sentence4: You're welcome. Have a great day! Sentence5: I also am looking to dine out. Something European, and expensive. Sentence6: The north part of town please. Are there any guesthouses? Sentence7: I'm sorry, there isn't anything available for Sunday. Would a different day work? Sentence8: I would like to go back to the hotel after eating Sentence9: I am looking for a place to stay with free wifi. Sentence10: I would like to book the City Stop Restaurant for 4 people on Sunday at 15:45. I need the taxi to get from the hotel to the restaurant by that time. Sentence11: Try hotels in the north, then. Sentence12: I really need a room for 4 people on Sunday. Sentence13: I'm sorry there are no rooms available for that day at all. Would it be possible for your to book another day? Sentence14: I was able to get you in for one night at the Acorn Guest House, reference number 2T2WBNRP . Sorry it took so long. Is there anything else I can help with? Sentence15: City Stop Restaurant is the european restaurant in the north near your hotel. Where would you like the taxi to take you after the restaurant? Sentence16: I actually attempted all ten guesthouses with the booking instructions, all of them are unsuccesful. May need to try hotels or different area to move forward. Sentence17: I need a hotel on sunday for 4 people for 3 nights. I need the hotel to be a guesthouse with free wifi. Sentence18: That is all. Thank you! You were so helpful! Sentence19: I also need a taxi to commute between both places, and could you make sure it arrives at the restaurant by the booked time? Sentence20: I have booked a yellow lexus, contact number 07327430362. Can I help you with anything else? Sentence21: Certainly. What part of town are you wanting to stay in? Sentence22: I'm not sure we're going to be able to help you get a room on Sunday. Can you restate your requirements? Sentence23: Can you tell me what time you would like the taxi to pick you up from the restaurant? Sentence24: Okay your all set! Reference number is 9ABQGPGT . Anything else? Sentence25: How about just 1 night? Sentence26: The rooms are booked then , shall I try a shorter stay? Sentence27: Great! Could you book one of those for Sunday for me? Sentence28: There are 5 different expensive European restaurants in town. Is there a particular area you would like to eat in? Question: Who has spoken the sentence 8? (A) User (B) System
Output: 


Answer: (A) User