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: It is free to enter and type is architecture. May I help you with anything else? Sentence2: No, you have been very helpful today, thank you. I am all set. Goodbye. Sentence3: Their phone number is 01223332320. Do you need anything else? Sentence4: I need a train going to cambridge. Sentence5: Yes, what is their entrance fee and attraction type? Thanks! Sentence6: On Thursday any time after 21:00. Sentence7: Where will you be departing from? Sentence8: I will departing from birmingham new street. Sentence9: I would recommend TR7324 which leaves Birmingham New Street at 21:40 and arrives at Cambridge at 24:23. Sentence10: Thank you for using our service! Sentence11: Your booking for one ticket is complete. Your reference number is VEG5Q87Q and 75.09GBP will be due at the station. Sentence12: Absolutely! What day and time would you like to leave? Sentence13: Yes. What is the phone number? Sentence14: Yes can you book that for 1 person? Sentence15: Yes, Old Schools is located in the centre area, and has no entrance fee. Anything else I can assist you with? Sentence16: I am also looking for a attraction called old schools. Question: Who has spoken the sentence 1? (A) User (B) System
Output: 


Answer: (B) System