You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.

Example Input: Sentence1: Can you give me more information about shopping? Sentence2: There are two hotels meeting your criteria. Can I recommend Gonville Hotel in the Centre area. It has parking and internet. Do you want that booking? Sentence3: There is nothing that is 3 stars which includes wifi, can I check for something else? Sentence4: I need you to find me a hotel with free wifi and a star rating of 3 in the west. Sentence5: There are no 3 star locations with parking. Sorry. Is there anything else I can help you with toay? Sentence6: What date are you checking in and how many are in your party? Sentence7: I'm sorry but i'm confused. Where would you like reservations at? Sentence8: the postcode is cb30ds Sentence9: What area of town will you be shopping in? Sentence10: I will be in the west part of town, but I think I am more interested in college visits if you could help me with that. Sentence11: Nothing matching your criteria exists on the west side.s location matter? Sentence12: No, the location does not matter. Sentence13: Hmm can you check one more time, it should really be a hotel. Sentence14: Actually, I wanted a 3 star hotel with wifi, not parking. Can you check again? Sentence15: No the area doesn't matter as much, please provide me with the reference number. Sentence16: Thanks! I'm also looking for somewhere to stay. Any hotels? Maybe around a 3 star, and I need wifi. Sentence17: Sure, what's the postcode for that college? Sentence18: I have 5 in the west can I recommend churchill college? Sentence19: book it for 2 people and 2 nights starting from sunday. Sentence20: Sorry, I'm not seeing anything that matches your request. Would you want to try a guesthouse? Sentence21: There are two, does the area matter to you? Sentence22: Can you recommend a 3 star hotel then? I'd like a room for 2 nights on sunday, for two people. Question: Who has spoken the sentence 5? (A) User (B) System
Example Output: Answer: (B) System

Example Input: Sentence1: I am sorry but you will have to get ticket there and here is the address 251a chesterton road. Sentence2: Do you want me to make a booking? Sentence3: I'm seeking an attraction! A boat one will be nice. Sentence4: Yes please! Thank you so much! Sentence5: Great! I have four for you. Two are in the centre. Any location you'd like in particular? Sentence6: Sure, I can get tickets for the cambridge punter in the city centre. If that sounds okay, what day and time would you like? Sentence7: I am also looking for the Oak Bistro, a place to eat. Sentence8: No, I'd like the name of one in the centre please. Question: Who has spoken the sentence 2? (A) User (B) System
Example Output: Answer: (A) User

Example Input: Sentence1: When will you be traveling? Sentence2: Thanks. I am also looking for a train to Broxbourne from Cambridge. Sentence3: Train TR9531 leaves Cambridge at 16:01 and arrives in Broxbourne at 17:01. That is the last train of the day. Would you like to make a reservation? Sentence4: Yes, please. I need 7 tickets. Sentence5: Did you have a specific departure or arrival time in mind? Sentence6: The price range is on the expensive side and I would like if they provide free wifi and parking. I want the hotel to be located on the north side. Sentence7: I need to arrive by 18:00, please. Sentence8: Your reference number is 4HRLU45B, is there anything else you need? Sentence9: Yes, I would like to find a hotel in the south. Sentence10: We don't have any hotels that fit your criteria. Would you like to search for something a little different instead? Sentence11: I am leaving on Thursday. Sentence12: Thank you for using the Cambridge TownInfo centre. Goodbye. Sentence13: Hi, I could use some help with information on places to stay. Sentence14: Okay, the booking was successful. The reference number is FGOM35JV . Sentence15: No, that's all I need from you, Thanks! Sentence16: That sounds perfect. I need it for 3 nights and 7 people will be staying starting Monday. Sentence17: The Lensfield Hotel at 53-57 lensfield road is a fabulous 3 star hotel that offers internet and parking. Would you like me to book you a room there? Sentence18: Yes, I can help with that. What area would you like to stay in and what is your price range? Question: Who has spoken the sentence 16? (A) User (B) System
Example Output:
Answer: (A) User