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 can I assist you? 
 customer: I am Ryan Miller want to visit Seattle to attend a workshop, can you book a ticket on 07/04 and 07/06? 
 agent: Can I know your travel airport codes? 
 customer: Sure, I want to fly from LAS to SEA. 
 agent: Please give me a minute. 
 customer: Ok. 
 agent: The flight 1008 of JetBlue airlines is available on your requested dates with a price of 100 and with 1 connection. Shall I proceed? 
 customer: That's perfect! Proceed with my booking. 
 agent: Miller, your ticket is booked successfully. 
 customer: Thank you. 
 agent: You are welcome.
A:
book