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: TR6834 leaves at 11:29 and arrives in Cambridge at 12:07. Does this allow you enough time? Or TR2083 that leaves at 09:29 and arrives in Cambridge at 10:07. Sentence2: From where to cambridge then? Sentence3: City centre is 328a histon road and el shaddai is 41 warkworth street. Sentence4: Alright, what day will you be traveling? There are four trains per day that meet your requirements. Sentence5: Please book me for one for train TR 6834 Sentence6: I would like to leave on friday. Sentence7: Both City Centre North B and B and El Shaddai have free wifi. Would you like to book one of these? Sentence8: I booked you one seat on TR6834 departing Bishops Stortford for Cambridge Friday at 11:29. Reference is MFL4CZTS . Is there anything more today? Sentence9: Thank you so much for your help. Sentence10: Certainly, we have City Centre North B&B in the north and El Shaddai in the centre, both very affordable. Would you like to book one? Sentence11: You are welcome have a great time! Sentence12: Can I just get the address for them please Sentence13: Could you help me find a 0 star lodging with free parking? Sentence14: I want to make sure also, that it is a hotel and includes free wifi Sentence15: Thanks, I also need a train to go to cambridge. Sentence16: I want to leave from bishops stortford and arrive by 12:15. Question: Who has spoken the sentence 10? (A) User (B) System
Output: 


Answer: (A) User