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: Please tell me their phone number and address Sentence2: Glad I could help. Sentence3: I want to arrive by 18:30. Sentence4: Wandlebury Country Park is located at Wandlebury Ring, Gog Magog Hills, Babraham and their phone number is 01223243830. Can I assist you further? Sentence5: Can you help me find a park in the south? Sentence6: I'm travelling from Ely to Cambridge on Tuesday and need help finding a train. Sentence7: There are two parks in the south. They are both free. I recommend wandlebury country park. Can I help with anything more today? Sentence8: Great! How many seats will you need? Sentence9: thank you and enjoy your stay in Cambridge! Sentence10: Just me please Sentence11: Your booking was successful, the total fee is 4.4GBP payable at the station. Reference number is : FCO2L8AN. May I assist with anything else? Sentence12: I have several options available is there a time you would like to depart? Sentence13: That is all I need today. Thank you for your help. Sentence14: I don't have a departure preference. Sentence15: We have trains running that route every two hours beginning at 5:35. Do you have a preferred departure or arrival time? Sentence16: Thanks again for all of your help Sentence17: Train ID TR6971 is 4.40 pounds Should I book it Sentence18: Yes, and please give me the ref. number. Question: Who has spoken the sentence 15? (A) User (B) System
Output: 


Answer: (B) System