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: We do have an african restaurant called Bedouin. It is located in the centre and is in the expensive price range. Would you like me to book a table? Sentence2: No, that'll be all! Thank you! Sentence3: What day will you be traveling and from where? Sentence4: The address is 100 Mill Road City Centre and the postcode is cb12bd. Can I help you with anything else today? Sentence5: I'm sorry, we don't have any Belgian restaurants. Would you like to try a different type? Sentence6: Can you help me find a train going to the stansted airport leaving after 18:45? Sentence7: I'm not very good with numbers. Can you tell me the travel time of that leg? Sentence8: I will be departing on Thursday from Cambridge. Sentence9: Okay. Thank you for using the Cambridge TownInfo centre. Have a great day Sentence10: Travel time is 28 minutes. Would you like reservations? Sentence11: The earliest train is TR9030. It will depart at 19:40 and arrive at the airport at 20:08. The price is 10.10 pounds. Would you like to book? Sentence12: How about African food? Sentence13: Could you just give me the postcode and address? Sentence14: No. Not interested in making a reservation but you can help me find a restaurant that serves Belgian food in the centre Question: Who has spoken the sentence 9? (A) User (B) System
Output: 


Answer: (B) System