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, they are located in the centre on wollaston road, postal is cb12ew and phone is 01223334898. Is there anything else that I can assist with? Sentence2: Okay, what is your destination and arrival preference? Sentence3: Yes please book that train, for 7 people. And may I get a reference number for the booking? Thanks. Sentence4: Hughes Hall is located in the centre. There are a lot of restaurants in that part of town. Are you interested in a particular type? Sentence5: The address for Hughes Hall is Wollaston Road. The phone number is 01223334898. Sentence6: No thank you. Have a great day. Goodbye Sentence7: I need to go to cambridge from kings lynn. Sentence8: I have train TR6368 leaving at 6:11 and arriving at 6:58. Would you like to book that? Sentence9: Thanks. I also need a train for Sunday. Sentence10: Can I have the address and phone number? I also need a train leaving Sunday and arriving by 21:00 Sentence11: I am glad to help have a nice stay Sentence12: What part of town is it located in? Are there any restaurants in that area? Sentence13: sure thing your ref # is 7RBUS3T6, anything else today? Sentence14: Can you help me find a place called Hughes Hall? Question: Who has spoken the sentence 7? (A) User (B) System
Output: 


Answer: (B) System