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 also need taxi service to get me from bridge guest house to the art museum. i want to leave the hotel by 14:15. Sentence2: Sure, the phone number for the Bridge Guest House is 01223247942. Can I help you with anything else today? Sentence3: Yes, free wifi and parking. Can I book it for you? Sentence4: just any that is inn the same area as the hotel Sentence5: I am also interested in finding something fun to do in the south. Are there any "must see" attractions you suggest? Sentence6: There are several attractions in the south. There are a couple nice parks, a theatre, a museum and a nightclub. Which type would you like to visit? Sentence7: No thank you that is all I need. Sentence8: No I prefer to go with the moderately priced guesthouse, does it have free wifi? Sentence9: The cost of the Byard Art Museum is free to get into, the phone number is 01223464646 and the address is 14 king's parade. Sentence10: Okay, I have a grey honda booked to pick you up at 14:15. The contact number is 07602309697. Can I help with anything else? Sentence11: I'm glad I was able to help you. Thanks for using our service have a nice day. Sentence12: Ok, how about the byard art museum? It has free admission. Sentence13: Not at this time but can you give me the phone number, please? Sentence14: I have a moderately priced guesthouse and a relatively expensive hotel, both rated at 3 stars, both with free parking and internet. Want to flip a coin? Sentence15: Sure. Can I have the phone number and address, and also how much it will cost? Sentence16: Hi there! I'm looking for a 3-star place to say in the south area of town. Question: Who has spoken the sentence 1? (A) User (B) System
Output: 


Answer: (B) System