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: Yes please. I will need a table for 6 at 18:15 on Friday. Sentence2: There are twenty-one moderately-priced restaurants located in the centre of town. Would you like me to make you reservations at one of them? Sentence3: What trains leave Friday from Bishops Stortford? Sentence4: Great. Can I also get a restaurant in the centre of town in the moderate price range? Sentence5: I have ten train departures fitting this criteria. Each leaves on friday on the :29 of the hour from 05:29 to 23:29. Would you like me to book one of these? Sentence6: Tickets on this train are 10.10 GBP each. Sentence7: You're quite welcome. Have a great day! Sentence8: Booking was successful to dine at the cow pizza kitchen and bar. The table will be reserved for 15 minutes. Your reference number is 3V4CILV4 . Is there anything else needed? Sentence9: How much is the ticket? Sentence10: No, thank you very much for your help. Sentence11: I need to arrive in cambridge by 11:15 which one would work best? Sentence12: The TR3450 leaves at 07:29 from bishops stortford and arrives in Cambridge by 08:07. Is that okay? Question: Who has spoken the sentence 3? (A) User (B) System
Output: 


Answer: (B) System