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: I would like it if you can help me find a place called Kambar. Sentence2: You're most welcome. I'm glad to be of service. Good-bye. Sentence3: That sounds great, thank you for your help today. Sentence4: Kambar is only 5 pounds to get into. Would you like any more information on it? Sentence5: Sure what day are you traveling? Sentence6: how much does it cost to get it? Sentence7: You're welcome. Did you need help with anything else? Sentence8: Sure thing! It is a nightclub in centre. Anything else I can help with? Sentence9: Actually, can you help me find information on a train to the Stansted Airport please? Sentence10: The train should depart from Cambridge on Monday after 15:45. What is the travel time, price and train ID? Sentence11: yes phone number and adress please Sentence12: Their address is 1 wheeler street, cb23qb. Their phone number is 01223842725. Will that be all? Sentence13: The next train is TR1088 departing at 16:40 with a duration of 28 minutes and it costs 10.10 pounds. Sentence14: That is all, thank you! Question: Who has spoken the sentence 1? (A) User (B) System
Output: 


Answer: (B) System