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: No thank you, goodbye. Sentence2: Train TR9533 is going to Norwich on Sunday at 10:36 and arrives at 11:55. Would you like to book it? Sentence3: Is there anything else I can help you with? Sentence4: I'd like to find a museum in the centre of town, please. Sentence5: Yes, I am departing from Cambridge and need to arrive in Norwich by 11:00. Sentence6: I've found eleven different museums in the centre of the city. Would you like to hear about any in particular? Sentence7: TR4969 will leave Cambridge at 9:36 and arrive at norwich at 10:55. Would you like to book it? Sentence8: Actually, I would love it if you could give me a recommendation of one. And give me the postcode as well. Sentence9: Super. I need a train on Sunday going to Norwich, also. Can you help with this? Sentence10: Goodbye. Have a nice day. Sentence11: I would like to arrive by 11:00, if there is one available! Sentence12: The Museum of Archaeology and Anthropology is free, the postcode is cb23dz. Sentence13: No, that would be all. Sentence14: And just to confirm you'll be departing from cambridge? Question: Who has spoken the sentence 3? (A) User (B) System
Output: 


Answer: (B) System