TASK DEFINITION: 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
PROBLEM: customer: Hello. 
 agent: Hello. 
 customer: Myself Kevin Johnson. 
 agent: Kevin, how can I assist you? 
 customer: Can you please help me in booking a flight ticket from DEN to EWR locations? 
 agent: Sure, may I know your trip dates? 
 customer: My travelling dates are from 07/02 and 07/04. 
 agent: Please hold on for a moment. 
 customer: Ok. 
 agent: Sorry, no flight is available on your route. 
 customer: It's ok. Thank you for the information. 
 agent: Thank you for choosing us.

SOLUTION: no_flight

PROBLEM: customer: Hi. I am Susan Moore. 
 agent: Hello, how may I render you today? 
 customer:  I want to book a connecting flight ticket to meet my grandparents at Detroit. Can you help me to book a flight ticket? 
 agent: Sure, we are here to help you. Can you please provide your take off and landing airport codes? 
 customer: Yes, my take off airport code is Boston, MA-BOS and landing point is MI-DTW. 
 agent: On which dates would you like me to book a flight ticket for you? 
 customer: I want a ticket on dates 07/27 and 07/29. 
 agent: Ok, please wait for a minute. 
 customer: Ok. 
 agent: Sorry to inform you, currently no flights are running at that locations due to abnormal weather conditions. 
 customer: That's ok. Thank you for the information. 
 agent: Thank you for opting us.

SOLUTION: no_flight

PROBLEM: customer: Hello, myself David Baker. 
 agent: Hello. How may I help you for the day? 
 customer: I want to change my destination airport codes in my existing reservation, can you please help me out? 
 agent: Please wait a  moment, let me check with your details. 
 customer: Ok, I will wait for your response. 
 agent: Please provide me you trip details. 
 customer: My planned trip dates are 10/08 and 10/10. 
 agent: Can you please provide your airport codes which you are travelling. 
 customer: Sure, my location airport codes are PHX and DCA. 
 agent: There is a flight available with one connection and the price is 200, can I proceed with that?'. 
 customer: Fine, please reserve me a seat. 
 agent: Your ticket has been booked with the Sprint airlines and the flight number is 1002. 
 customer: Thank you for your quick service. 
 agent: Thank you for reaching us.Have a safe journey ahead.

SOLUTION:
book