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 aid you today? 
 customer: I am looking for a flight with a connected flight to SEA. Can you please help me for booking from PHL? 
 agent: Sure, please share me your trip dates. 
 customer: My trip dates are on Sept 02 and 04. 
 agent: For booking, we need your good name. Please mention it. 
 customer: My name is Sarah Lopez. 
 agent: Do you need direct flight or connecting flight? 
 customer: I need a connected flight. 
 agent: May I know your class preferences? 
 customer: No, I am comfortable with any class. 
 agent: Sorry to say that, there are no flights available on the routes of your journey. 
 customer: Ok, thanks for your information. 
 agent: Thank you for availing us.
Output:
no_flight