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 need a train ticket from cambridge to ely. I want to arrive at least by 21:15, can I get the reference # too please? Sentence2: Yes, for myself and 4 nights starting tuesday Sentence3: The price does not matter. Sentence4: Okay! How many people would you like me to book a train for? Sentence5: arrive by 21:15 for the same group of people. and I need a reference number Sentence6: Would you like me to book it for you? Sentence7: yes please. Can I get the reference number? Sentence8: I have booked you on the train leaving Cambridge at 19:50. Your will arrive at 20:07 and your reference number is 7776W8DF . Sentence9: I recommend the Warkworth House at Warkworth Terrace. Would you like me to book this for you? Sentence10: There are 8 trains that would get you there by 21:15. What time would you like to depart Cambridge? Sentence11: What day would you be traveling? Sentence12: Can I look up anything else for you today? Sentence13: Yes it has free wifi. Would you like me to book it for you? Sentence14: Hi. Can you help me find an east hotel? Sentence15: Sure, did you need anything else specifically? Sentence16: Thank you so much for your help. Sentence17: I will be traveling on tuesday. Sentence18: No, it does not matter. I am also looking a for place with free parking. Sentence19: That is all for now. Thank you for all your help. Sentence20: We have six four star guesthouses on the east side. Does price matter? Sentence21: You are all set, the reference number is ZI27S8E2, any further questions? Sentence22: I would like something with 4 or 5 stars. Sentence23: All have free parking! Moderately or cheaply priced? Sentence24: Does it also have free wifi? I need wifi too. Sentence25: Thank you for contacting us and have a nice day. Sentence26: I do not have a specific time to leave, thank you for asking. Question: Who has spoken the sentence 12? (A) User (B) System
Output: 


Answer: (A) User