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: Hi. 
 agent: Hello. How may I assist you? 
 customer: Emma Wilson here. 
 agent:  Emma Wilson, nice to meet you. 
 customer: I would like to book a ticket from OAK to JFK, could you please help me? 
 agent: Sure, let me know travel dates too. 
 customer: My journey dates are 12/11 and 12/13. 
 agent: I got a flight for you with 0 connection. Shall I proceed? 
 customer: Yes, proceed. 
 agent: Ok, your ticket has been booked with flight number 1016 and your airline is Spirit. 
 customer: Thank you for the help. 
 agent: Thank you for choosing us.
A:
book