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 assist you today? 
 customer:  I am Christine Smith want to travel to DC-IAD to meet my friends from CA-LAX. Can you book a connecting flight? 
 agent: Sure, I am here to help you but I need your travel dates to search available flights for you. 
 customer: My travel dates are 08/10 and 0812. 
 agent: Please wait for a minute, let me check. 
 customer:  Ok. 
 agent: Based on your request there is a flight with airline AA and price is 100. Shall I proceed? 
 customer: Ok, you can confirm my booking. 
 agent: Your ticket has been booked with your name and flight-1002. 
 customer: Thank you for booking. 
 agent: It's my pleasure, have a great journey.
A:
book