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
Input: customer: Hello. 
 agent: Hello, how may I guide you? 
 customer: Jacob Roberts here. 
 agent: Nice meeting you Jacob. 
 customer:  I am event organiser and there is a marriage event in ORD, so I need to travel there, can you help in searching a flight from MCO? 
 agent: Sure, I am here to help you? May I know your dates? 
 customer: My trip dates are from 08/08 to 08/10. 
 agent: Please wait for a while to check it. 
 customer: Sure, take your time. 
 agent: As per your request there is a flight with drop of connections 2 and the fare is 100. Shall I confirm your booking? 
 customer: No, I want a direct flight. 
 agent: Sorry Jacob, we cannot provide you a direct flight on your dates because they are busy in travelling. Hope you can understand that one. 
 customer: That's fine. 
 agent: Thank you for approaching us, have a nice day. 
 customer: Thanks and wish you the same. 
 agent: Welcome.
Output:
no_flight