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

customer: Hi, I am Jack Lewis. 
 agent: Hello, how may I aid you? 
 customer: Owing an emergence, I want to cancel my recent reservation. 
 agent: Sure, I will help you. 
 customer: Can you please help me with it? 
 agent: Please wait for a while. 
 customer: Ok. 
 agent: Thanks for your time. There is no active reservation found in your name to cancel. 
 customer: No problem, thanks for the information. 
 agent: Thank you for availing us.
no_reservation

customer: Hello. 
 agent: Hello. 
 customer: I am Ashley Brown. 
 agent: How may I best help you today? 
 customer: I would like to attend a event in Seattle with my family. Could you please help me to book a ticket from IAH to SEA? 
 agent: Sure, I will help you. To check the flight availability we need your scheduled dates, can you please share me your preferable dates? 
 customer: My travelling dates will be on 10/17 to 10/19. 
 agent: Do you prefer connecting flight or direct flight? 
 customer: I need a connecting flight. 
 agent: We found a direct flight but there is no connecting flight. 
 customer: Ok, not an issue. Thank you. 
 agent: Thank you for communicating us.
no_flight

customer: Hi, Rachel Evans here. 
 agent: Hello, how can I aid you today? 
 customer: I want to go Brooklyn walking tour on 06/05, can you book me a flight ticket with price under 500. 
 agent: Sure, may I know your return date? 
 customer: Sure, it's 06/07. 
 agent: Let me know your airport codes. 
 customer: I would like to fly from NC-CLT to NY-LGA. 
 agent: Do you have any connection limit. 
 customer: Yes, I need a single connecting flight. 
 agent: Thanks for waiting, there is a flight with airline: UA, flight number: 1003, price 100, 1 connection. Shall I proceed? 
 customer: Please proceed. 
 agent: Your ticket has been confirmed. 
 customer: Thank you for your assistance. 
 agent: Thank you.
book