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: I'm looking for a moderate priced hotel for 6 people and 5 nights from Sunday. Sentence2: Okay, how about a moderately-priced hotel in the south area instead that has free wifi and free parking? Sentence3: I have two guesthouses that match your request; the Aylesbray Lodge and Bridge Guesthouse. Aylesbray has 4 stars and Bridge Guesthouse has 3. Which would you prefer? Sentence4: Aylesbray sounds good. I need a booking for six, five nights starting from sunday. Sentence5: Corpus christi is a college located in the centre of town. The phone number is 01223338000 and is located at king's parade. Sentence6: Can I have the post code please? Sentence7: The postcode is cb21rh. Sentence8: I have 4 available hotels in the centre. Two of them have a cheap price range, and two have an expensive range. Would one of these do? Sentence9: Hello- I would like some information about visiting Corpus Christi please Sentence10: Can you also find me a place to stay in the centre? Sentence11: There are several places that are located in the same area, can you give me some more preferences? Sentence12: You are welcome, have a blessed day. Sentence13: Booking was successful reference number is GS1J7NYI . Is there anything else I can help you with today? Sentence14: I'd like a moderately priced hotel with free wifi and parking. Sentence15: the admission is 2 pounds. Sentence16: Is there an entrance fee? Sentence17: I'm sorry, I'm not pulling up any matches. Sentence18: That is all I need today, thank you for your help. Question: Who has spoken the sentence 9? (A) User (B) System
Output: 


Answer: (B) System