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, I am Samuel Young. 
 agent: Hello, how may I help you? 
 customer: My kids were bored with daily schedule, so I want to make their mind fresh. I have decided to take a tour to Seattle. 
 agent: Do you need need to do flight booking? 
 customer: Yes, I need a flight between the Routes BOS and SEA. 
 agent: Ok, please share your dates of your journey. 
 customer: I would like to go on 12/09 and return back on 12/11. 
 agent: There is a flight available with 300 cost, shall I book? 
 customer: Ok, please proceed if it is a single connecting flight. 
 agent: Your ticket is booked with Hawaiian airlines and your flight number is 1014. 
 customer: Thank you. 
 agent: Thank you for reaching us.
Output:
book