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 Input: customer: Hello, I am Pamela Rodriguez. 
 agent: Hello, what can I do for you today? 
 customer: I want to reach Detroit, MI-DTW to meet my old friend to start a new business, can you help me to book a flight ticket from Dallas, TX-DFW? 
 agent: Sure, do you need a connection in between your journey? 
 customer: 02/04 and 02/04 are my planned travelling dates. I prefer one connection. 
 agent: Ok, please wait a minute. 
 customer: Ok. 
 agent: We found a AA airline with flight number 1003 and price is 100 available according to your requirements. 
 customer: That's good you can book the ticket. 
 agent: Your reservation is done. 
 customer: Thanks for your assistance. 
 agent: Thank you for picking us.
Example Output: book

Example Input: customer: Hello. 
 agent: Hello. How can I help you? 
 customer: I have planned to book a flight on June 14th, so please help me in booking a flight. 
 agent: Sure, may I know your airport codes please? 
 customer: My airport codes are LAS - BOS. 
 agent: Your return journey date please? 
 customer: I intend to return on 16th June. 
 agent: Do you have any specifications? 
 customer: I would like to depart in morning time. 
 agent: Any thing else? 
 customer: I prefer an economy class. 
 agent: May I know your name please? 
 customer: Sure, my name is Daniel Moore. 
 agent: I am sorry no flights found your route. 
 customer: No worries, thank you. 
 agent: Thank you for choosing us.
Example Output: no_flight

Example Input: customer: Hi. 
 agent: Hello. How can I help you? 
 customer: I am Eric Robinson. I want to book a ticket from PHL to ORD, can you help me? 
 agent: Sure, I will help you to book a flight ticket. Can you please share me your travelling dates? 
 customer: My travel dates are 11/06 and 11/08. 
 agent: Ok, do you have any connection limit? 
 customer: I need a connecting flight. 
 agent: Ok, may I know your arrival and departure time? 
 customer: I want to return in the afternoon. 
 agent: Sorry, no flights are available on your route. 
 customer: No problem, thanks for checking. 
 agent: Welcome, have a nice day. Thank you for choosing us.
Example Output:
no_flight