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: That sounds good. Can you book it for Sunday at 13:30 for 6 people? Sentence2: How about the Jinling noodle bar? Sentence3: The booking at the shanghai was successful. The table will be reserved for 15 minutes. Can I help you with anything else today? Sentence4: Yes I need a reference number for the booking. Sentence5: The reference number is TG8VOAVX . Do you need anything else? Sentence6: No thank you that will be all. Sentence7: I want to find a moderate priced place to dine in the centre of town. Sentence8: Lets change it to chinese food, anything? Sentence9: As long as they are moderate priced. The shanghai sounds good. Sentence10: Okay. Glad I could help. Enjoy dining there. Sentence11: I am not finding anything for german food. Something else perhaps? Sentence12: Unfortunately, there are no bookings available. Can I try one of the other Chinese restaurants in the area? lan hong house or shanghai family restaurant? Sentence13: I would like to try some German food please. Sentence14: Sure thing. What type of food were you thinking about? Question: Who has spoken the sentence 8? (A) User (B) System
Output: 


Answer: (A) User