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: Feel free to contact us anytime in the future. Sentence2: Where will you be coming from? Sentence3: Hi there. Can you tell me if you have any parks in the east part of town? Sentence4: Thanks you too. Sentence5: I need to leave london liverpool street and get there by 18:30 Sentence6: The TR5863 train will get you to Cambridge by 17:07, would you like to make a booking? Sentence7: Will you be needing one or more seats on that trip? Sentence8: Actually, I don't need it booked. Can you tell me what time it leaves? Sentence9: Yes we have cherry hinton water play park. Sentence10: Yes, that will be fine. Sentence11: Yes, they have free admission. Their phone number is 01223446100. The postcode is cb18dw. Is there anything else I can help with today? Sentence12: You're welcome. Have a nice day. Sentence13: I am looking for a train going to Cambridge on Saturday. Sentence14: Yes, that sounds like someplace for me to visit. Is it free? Also, I'll need the postcode and phone number. Sentence15: Train TR5863 will be departing at 15:39. Is there anything else I can help you with? Sentence16: You would be on the train for 88 minutes and it is 13.28 pounds. May I assist you with anything else today? Sentence17: no, thank you. that is all. Sentence18: What is their price and the travel time? Question: Who has spoken the sentence 8? (A) User (B) System
Output: 


Answer: (A) User