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: There are a few different options. Would you prefer a hotel or a guesthouse? Sentence2: It'll be 7 people and 3 nights beginning tuesday. Please remember to give me the reference number. Sentence3: There is one option: the cambridge belfry. Shall I book it for you? Sentence4: Thank you for contacting us and have a good time! Sentence5: I would like a four star hotel please. Sentence6: I would like to go to a park in the south. Sentence7: The cambridge belfry just became available. Booking was successful. Reference number is : 7SKSRY3S . Will this work for you? Sentence8: Yes, thank you! That will work. Sentence9: I'm also looking for a place to stay that includes free parking and is in the cheap price range. Can you find something? Sentence10: We have two park available sheep's green and llammas land park fen causeway, and wandlebury country park, both have free admission. Sentence11: Is there any hotel available for you to book? Sentence12: Yes, book please and I need a reference number Sentence13: Unfortunately it is not allowing me to book hotels right now. Is there anything else I can do for you? Sentence14: Could you get me the phone number to the Wandlebury country park? Sentence15: No that will be all thanks so much for all of the help. Sentence16: Is there anything else I can help you along with? Sentence17: Before I can book, I need to know the length of your stay, what day you'll arrive, and for how many people Sentence18: Sure thing, 01223243830. Was there anything else I could assist with? Question: Who has spoken the sentence 2? (A) User (B) System
Output: 


Answer: (A) User