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: Can you book it for me? Sentence2: say hi to your family. Sentence3: I am staying in west cambridge. Are there any parks out there to take my kids to? Sentence4: There are 7 different museums in the west area. All are free addmission except one. Would you like me to make a suggestion? Sentence5: The ticket price is 8.08 pounds. The departure time is 05:24. May I help you with something else? Sentence6: Yes, please pick one for me, and let me know the entrance fee, phone number and postcode. Sentence7: I will thank you. Goodbye. Sentence8: There are 7 different parks on the west side. I would recommend a free park called Kettle's Yard. Would you like more information on it or any other park? Sentence9: how about TR4194? it arrives at 05:52 Sentence10: I would recommend People's Portraits Exhibition at Girton College. They offer free entrance. Their postcode is cb3ojg. Their phone number is 01223338901. Sentence11: thank you and have a great day Sentence12: No that is all the information I need today. Sentence13: How about a train? I need to go from Stansted Airport to Cambridge on Saturday and arrive there by 08:45. I need departure time, train ID, and price. Thanks! Sentence14: That is all. Have a great day. Sentence15: There are no parks on the west side of town. Do you want me to search for a park in a different part of town? Sentence16: I'm sorry, we don't do bookings for attractions. Sentence17: No, can you look for a museum instead? Sentence18: Are there any museums on the west side of town? I will need the entrance fee, phone number, and postcode. Sentence19: Your welcome. Have a great day. Sentence20: Sounds great. I don't need to book it, but I would like the price. Question: Who has spoken the sentence 9? (A) User (B) System
Output: 


Answer: (B) System