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: 4 people are in my party. Sentence2: Ok, I have booked your reservation at royal standard. Is there anything else I can help you with? Sentence3: I am looking for a train that is arriving by 13:00 and leaving on Monday. Sentence4: how many people will be in your party? Sentence5: The Royal Standard serves gastropub type food. Their address is 290 Mill Road City Centre and their phone is 01223247877. Sentence6: How much does a seat for the TR1213 on Monday cost? Sentence7: Thank you. Sentence8: Have I answered all your questions today? Sentence9: If you could book a reservation for Tuesday at 06:30 pm that would be most appreciated. Sentence10: Thank you for calling. Sentence11: Yes, that sounds great. Sentence12: Yes, I want to leave from Cambridge and I'm going to Broxbourne. Sentence13: Thank you very much for helping me get my reservations in order. Sentence14: Can you tell what kind of food the restaurant serves and their address and phone number. Sentence15: How about the TR1213? It matches your specifications and leaves at 9:01. I can book this train if you'd like. Sentence16: I can help you narrow your search if you give me your departure site and your destination? Sentence17: No, that will be all today. Thank you. Sentence18: You are quite welcome. Enjoy your meal and please let me know if you need assistance with reservations during your visit. Sentence19: 17.90 pounds is good enough. I'll go with that. Sentence20: There are several options with the criteria you provided. Do you have a preference on the type of food? Sentence21: No, please pick one for me and provide the phone number and address. Sentence22: The royal standard is a gastropub. It's located at 290 Mill Road City Centre, phone 01223247877. Would you like to make a reservation? Sentence23: I'll also need a day and time for the reservation. Sentence24: Thank you. I also need recommendations for an expensive restaurant in the east part of town. Question: Who has spoken the sentence 17? (A) User (B) System
Output: 


Answer: (B) System