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 am also looking for a restaurant in the centre in the expensive price range. Sentence2: No, problem, I just need to know what time you wish to get there and where you'll be arriving from. Sentence3: Curry Garden is a nice indian restaurant in the Centre. Should I book you any tables? Sentence4: Okay, you'll be picked by a black lexus. Their contact number is 07229815705 Sentence5: I just need the area it is located in and the phone number please. Sentence6: it is a college situated in the west, do you need the address? Sentence7: Can you also book a cab to get me to the restaurant in time for my reservation? Sentence8: Can you provide information about Clare Hall? Sentence9: I have many restaurants. Is there a type of food you would enjoy? Sentence10: You are very welcome. Goodbye. Sentence11: okay, how about indian food. Sentence12: unfortunately, i do not. are there other cuisines that you like? Sentence13: That sounds nice, can I get their phone number please? Sentence14: Sure, the phone number is 01223302330. Is there something else I can help you with today? Sentence15: I really love mexican. Do you have one that serves that? Sentence16: I want to leave the restaurant by 11:45. Going to Clare Hall. Sentence17: Wonderful, you made me excited for this trip now can't wait!, That is everything, thank you. Sentence18: It's located in the west and the phone number is 01223332360. Is there anything else I can help you with today? Question: Who has spoken the sentence 3? (A) User (B) System
Output: 


Answer: (B) System