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 want to get to Cambridge by 10:15. Sentence2: I definitely want italian food, please. Sentence3: I do not have any of that sort of food. Shall I try another? Sentence4: OK, would you like more info on clowns cafe to a booking? Sentence5: Great. I can help you with that. Where were you going to be departing from? Sentence6: Please reach out to us again, if we can be of further assistance. Good-bye. Sentence7: im happy i was able to help. gooday Sentence8: I need to book a train on friday Sentence9: That would be great, could you get me the phone number, address, and postcode please? Sentence10: No but I also need and expensive restraint in the center area. Sentence11: The TR2083 will take you from Bishops Stortford to Cambridge. It departs on Friday at 09:29 and you'll arrive in Cambridge at 10:07. Would you like me to book it? Sentence12: I am departing from Bishops Stortford. Sentence13: I'm confused, are you interested in Indian or Italian food? Sentence14: where are you wanting to go to? Sentence15: phone number, address and postcode please Sentence16: What type of food would you be interested in? Sentence17: Might I suggest clown's cafe? It's an expensive indian restaurant located in the centre. Sentence18: molecular gastronomy Sentence19: That is all thank you. Sentence20: Yes, please try Italian food. Sentence21: The clowns cafe is located at 54 King Street City Centre. Their postcode is cb11ln and they can be reached at 01223355711. Will that be all today? Sentence22: Good day to you as well. Again, thank you so much. Good-bye. Question: Who has spoken the sentence 1? (A) User (B) System
Output: 


Answer: (B) System