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: Hello, I am Sandra Jones. 
 agent: Hello, how can I serve you today? 
 customer: Can you please help me to book a flight ticket from Los Angeles, LAX to Las Vegas, LAS? 
 agent: Sure, can you please share your journey dates? 
 customer: I intend to travel on 06/09 to 06/11. 
 agent: Ok, please wait for a while. 
 customer: Sure. 
 agent: We found a flight from Hawaiian airlines, flight number 1009, 1 halt in between journey with the price of 100. 
 customer: You can proceed to confirm it. 
 agent: Your ticket has been reserved. 
 customer: Thank you for your service. 
 agent: Thank you for reaching us.
A:
book