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
Problem:customer: Hi,. 
 agent: Hello. How can I assist you? 
 customer: I am planning to celebrate and attend my mother's birthday in Seattle, from CA - SFO. Can you book a flight ticket to me? 
 agent: Ya sure. Please share your traveling details. 
 customer: I need a connecting flight. My destination code is to WA - SEA. 
 agent: Your traveling dates? 
 customer: My travelling dates are from 03/10 to 03/12. 
 agent: Give me a moment. 
 customer: Ok. 
 agent: We found a flight with your requirements. Airline:Southwest. Flight number:1013. Price:200. And with a single connection. 
 customer: You may proceed with the booking. I am Christopher King. 
 agent: OK. Your flight ticket is booked. 
 customer: Thanks for the help. 
 agent: Thank you for reaching ours.
Solution:
book