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: Monday at 7:00 p.m. Sentence2: Rosa's is a cheap place to stay and the phone number is 01223512596! Sentence3: Thank you! Could you help me find an indian food restaurant in the same area as the hotel? Sentence4: I don't care about price range. Sentence5: There are two guesthouses that fit your needs. Is there a certain price range you would like? Sentence6: May I please get a phone number for the reservation? Sentence7: Happy to be of service. Have a wonderful day! Sentence8: Okay so it has free parking. What is the price range? Also could i receive the phone number? Sentence9: Yes I have white Lexus picking you up at 16:15. The contact number for the taxi is 07932069775. Anything else? Sentence10: Before that, can I please have the address, phone number and postcode for the restaurant? Sentence11: Sure, the phone number is 01223412299. The address is 64 Cherry Hinton road, Cherry Hinton, and the postcode is cb17aa. Sentence12: Yes. What information do you need from me? Sentence13: I need a taxi to get there and will leave the restaurant by 16:15. Can you get me the contact number and car type? Sentence14: Sounds great! That is all I need. Thanks. Sentence15: I need a hotel in Cambridge that is rated 4 stars be located in the south area. Sentence16: There is one Indian restaurant in that area - Taj Tandoori. It is expensive. Would you like me to book a table for you? Sentence17: What day and time would you like? Sentence18: How about rosa's bed and breakfast? It has internet and parking. Question: Who has spoken the sentence 17? (A) User (B) System
Output: 


Answer: (B) System