In this task, you are given a conversation between a flight agent and the customer. You are given 4 options and you need to select the goal of the conversation. It is provided as part of customer's context, which has to be one of the following: 'book': Make a new reservation, 'cancel': Cancel an existing reservation, 'no_flight': No flight found for the customer's preference, 'no_reservation': No reservation / No change / No cancellation was made in the conversation, mostly enquiring details
Example: customer: Hi.
agent: Hello. How can I help you?
customer: I would like to change my existing reservation as my plan to go for a holiday trip got postponed. Can you please help me with this?
agent: Sure, may I know your name please?
customer: My name is Anthony Phillips.
agent: Please wait a moment.
customer: Sure.
agent: Unfortunately there is no reservation found with your given name.
customer: Not a problem, thank you for checking.
agent: Thank you for choosing us.
Example solution: no_reservation
Example explanation: Here the customer has not asked for any booking, he just wanted to update his already booked flight, so the status would be no_reservation

Problem: customer: Hello.
agent: Hello, how may I support you?
customer: I am Shirley Martinez and I want to book a flight with a halt to reach Charlotte on Apr 28. Can you please help me in booking a flight from IAH?
agent: Sure, may I know your final destination airport code?
customer: My destination airport code is CLT.
agent: When would you like to return?
customer: I intend to return on 30th of the same month.
agent: How much can you pay for buying your ticket?
customer: I can pay up to 5000.
agent: Are you okay with connecting flight or you need a direct flight?
customer: I have already mentioned that I need a halt.
agent: Is there any priority between economy class or business class?
customer: No.
agent: At what time do you prefer to travel?
customer: I am okay with any time.
agent: Please be on hold for sometime, as I can check a flight for your journey with the best airlines.
customer: Sure.
agent: There is an UA airline with flight number 1012 that leave from IAH and arrive at CLT with a total tariff of 100. Is that fine?
customer: Sure, you can proceed.
agent: Your request for booking has been processed successfully.
customer: Thank you.
agent: Thank you for choosing us.
Solution: book