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: Okay, not a problem. Which place will you like to be picked up from, and at what time? Sentence2: I was really hoping to find a hotel if you could? Sentence3: the a and b guest house is a guesthouse located in the east. It has 4 stars and is moderately priced. Sentence4: The ballare is located in the centre and costs 5 pounds. They are located at heidelberg gardens, lion yard. Sentence5: A 2 star hotel is fine does it have free wifi? Sentence6: No problem. I have three hotels, however, they are not 4 star. How about a 2 star rated hotel? Sentence7: I want to leave the Ballare by 22:45. Can you get me the contact number and car type? Sentence8: Okay, we have booked you two for 4 nights, and your reference number is ZUA8CK80 . Anything else I can help with today? Sentence9: Great! I also need a place to stay in the moderate price range. Any suggestions? Sentence10: Yes, please. I'd like 4 nights for 2 people starting Thursday. Sentence11: Thank you very much for helping me! Have a great day. Sentence12: You're welcome. If you need anything else don't hesitate to call. Sentence13: Sure, we have 6 ballare, club salsa, kambar, soul tree nightclub, and the fez club. Sentence14: I am looking for nightclub options in cambridge. Sentence15: Lovell Lodge is a hotel in the north that has free internet. Would you like me to book it? Sentence16: Yes, please! I need a taxi to commute between the two places. Sentence17: What is the area and how much is the entrance fee? I will need the address and the phone number. Sentence18: A yellow Toyota will pick you up. There number is 07113435261, just in case you need it. Question: Who has spoken the sentence 5? (A) User (B) System
Output: 


Answer: (B) System