Instructions: 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: Hi. 
 agent: Hello, how can I assist you? 
 customer: Myself Donna Allen, can you help me searching flights from JFK to PHX? 
 agent: Sure, on which dates are you planning to travel? 
 customer: I am going to start my travel on 08/13 and I am going to return on 08/15. 
 agent: Please be on hold, I will get back to you with flight details. 
 customer: Ok, but make sure with connection 1. 
 agent: There is flight available for you from Spirit airlines with 1 connection and travel charge of 100. Shall I proceed with booking? 
 customer: Proceed to booking. 
 agent: Your ticket has been booked with flight-1025, have a safe journey. 
 customer: Thank you for your services.
Output:
book