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: Can I get information on where you will be departing from? Sentence2: Yes, I'll be departing from London Kings Cross. Sentence3: Can you just give me their phone number and postcode? Sentence4: You're quite welcome. Goodbye! Sentence5: I would like find some information about a train. Specifically, I'm looking for details about a train that leaves Tuesday after 11:15. Sentence6: The reference number is 6SCORZPY . Sentence7: I am also looking for a restaurant that serves modern european food in the expensive price range. What do you find available? Sentence8: Certainly! Their phone number is 01223505015 postcode cb11n. Is there anything else I can help you with today? Sentence9: That's all I need. I appreciate the help. Sentence10: The TR7850 leaves London Kings Cross at 11:17 and arrives in Cambridge at 12:08. Would you like to book a ticket? Sentence11: The only place in town like that is Darry's Cookhouse and Wine Shop. It's in the center of town. Would you like a table? Sentence12: Yes please book it for 5 people and give me the reference number. Question: Who has spoken the sentence 5? (A) User (B) System
Output: 


Answer: (B) System