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: The TR7213 gets you there at 06:08. Need a ticket? Sentence2: No, that is all I need. Thank you for your help. Sentence3: Hello, I need to take a train to Stansted airport, arriving by 20:30. Sentence4: I am happy to help you with the booking, enjoy. Sentence5: Thanks! I appreciate your help. Bye. Sentence6: Yes there is the abbey pool and astroturf pitch would you like their address? Sentence7: Yes. May I have the address and postcode for the Abbey Pool please? Sentence8: Maybe. I need to leave Cambridge on Friday. Will that train work? Sentence9: It's my pleasure. Thank you for using Cambridge TownInfo centre. Goodbye. Sentence10: What is the cost per ticket? Sentence11: No. Are there any swimming pools on the east side of town? Sentence12: The price for that ticket is 10.10 pounds. Would you like me to book it for you? Sentence13: Yes, of course. They are located at Pool Way, Whitehill Road, off NewMarket Road. Their postcode is cb58nt. Is there anything else I can do for today? Sentence14: I recommend TR1110. It will arrive in Cambridge at 20:08 on Friday. I can book passage for you if you let me know how many tickets you need. Question: Who has spoken the sentence 11? (A) User (B) System
Output: 


Answer: (B) System