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 Jeffrey Wright. 
 agent: Hello, how can I assist you? 
 customer: I need to book a flight ticket to Houston for my alumni meet, please help me in booking from LGA to HOU? 
 agent: Sure, when are you planning to travel? 
 customer: My journey is from 02/21 to 02/23. 
 agent: Please provide your specifications. 
 customer: I need a connecting flight. 
 agent: Hawaiian airlines with single connection and price is 100 of 1005 flight. 
 customer: Ok, go ahead. 
 agent: Your ticket has been confirmed. 
 customer: Thanks for your service. 
 agent: Thank you.
Output:
book