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. 
 customer: I am Kenneth Carter. 
 agent: How may I be at your service, Kenneth Carter? 
 customer: I want to meet my grandparents who are staying at New York, EWR. 
 agent: Ok. 
 customer: Can you help me in booking a flight ticket on 12/04? 
 agent: Sure, I am perky to help you. On which date you want to return? 
 customer: I will be return on 12/06. 
 agent: What is your source point? 
 customer: I am boarding at Washington, IAD. 
 agent: Are you having any preferences? 
 customer: I need 1 connecting flight. 
 agent: Ok, please hold on. Thanks for waiting. 
 customer: Ok. 
 agent: You have 1029 flight with 1 connection of price 100 in Southwest airline. 
 customer: Ok, You can proceed. 
 agent: Ticket has been reserved with your name. 
 customer: Thanks for your assistance. 
 agent: Thank you for availing us.
Output:
book