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: Get me a phone number for one that is close to the hotel and is free. Sentence2: Their address is storey's way and their phone is 01223336233. Is there anything else I can do for you today? Sentence3: Happy to help. Please let us know if you need anything else. Sentence4: Could you give me the address and phone number? Sentence5: All set, the car is a white volvo, Contact number is 07321652724, any other questions? Sentence6: I will need to be picked up at the hotel by 4:45 to arrive at the college on tuesday. Sentence7: I would like to book it for 4 nights for 4 people please. Sentence8: Well then should I search for a college in the north instead, if you want it close to your hotel? Sentence9: i want to check in on tuesday Sentence10: Yes please, a reference number would be great! Sentence11: none in the west, I talked so someone earlier Sentence12: I also want to book a taxi to commute between the two places. Sentence13: that's okay, give me the number for the college closest to the hotel and is free, may I know the address as well? Sentence14: I am looking for a hotel call arbury lodge guesthouse. Sentence15: Yes, i am looking for colleges to visit on the west side of town. Sentence16: Your booking was successful. Reference number is : OE6IHAT2 . Is there anything else I can assist you with today? Sentence17: I'm sorry for the confusion, which college do you want a contact number for? Sentence18: No I believe we got everything covered today.Thanks. Goodbye. Sentence19: Arbury Lodge Guesthouse is located at 82 Arbury Road in the north side of Cambridge. Do you need more information or would you like to book a room? Sentence20: Which will be your departure site? What time do you want to leave or to arrive? Sentence21: There are not any colleges located in the north actually. Sentence22: None in the north 5 in the west, I personally recommend churchill college entrance is free, any further questions? Sentence23: Will you be needing a reference number? Sentence24: Okay, I can help you with that. What day do you plan to check in? Sentence25: There are five. Three that are free, and two that have an entrance fee. Sentence26: Make sure you get contact number and i'll be there as soon thank you Question: Who has spoken the sentence 22? (A) User (B) System
Output: 


Answer: (A) User