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 can I help you today? 
 customer: I am looking for a flight which will be travelling from Denver to EWR. Can you please help me in this? 
 agent: Sure, I am gleeful to help you with that. May I know your travelling dates, please? 
 customer: My travel dates are from Oct 24 to Oct 26. 
 agent: Can I know your connection limit? 
 customer: I am fine comfortable with minimum 1 connection limit. 
 agent: Do you have any class preference? 
 customer: No that's it, thank you. 
 agent: Is there any other requirements regarding on your journey? 
 customer: No. 
 agent: There is a connecting flight-1000 available in Jet Blue Airlines with a fare of 100. Shall I book it? 
 customer: Please proceed my booking with my name of David Thompson. 
 agent: David Thompson, your booking is done in economy class. 
 customer: Thank you so much.
Output:
book