Detailed 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
Q: customer: Hello. 
 agent: Hello, how may I help you? 
 customer: I am Kevin Lee. I want to book a ticket from ORD to MSP to attend my friend's birthday party, can you help me in booking? 
 agent: May I know on which dates you are willing to travel? 
 customer: I am departing on Mar 22 and return on Mar 24. 
 agent: Do you require any stopovers in your journey? 
 customer: I need a flight with connection limit 1. 
 agent: Do you prefer any specification in between journey? 
 customer: No, I do not have any other specifications. 
 agent: There is a connected flight in frontier airlines with the fare 300. 
 customer: Please proceed for booking. 
 agent: Your booking is done with the flight number 1012. 
 customer: Thank you for your help. 
 agent: Thank you.
A:
book