Q: 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
customer: Hi. 
 agent: Hello. How can I  help you? 
 customer: Can you please help me with booking a flight ticket from OAK to IAD? 
 agent: Your travelling dates please? 
 customer: My travel dates are Aug 01 and 03. 
 agent: Do you have any specifications? 
 customer: I need a connecting flight. 
 agent: There is a flight with single connection in Spirit airlines, can I  proceed for booking in economy class? 
 customer: You can proceed with booking. 
 agent: On which name can I proceed for booking? 
 customer: My name is Elizabeth Robinson. 
 agent: Your booking is done in 1001 flight. 
 customer: Thank you. 
 agent: Thank you for choosing us.
A:
book