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? 
 customer: Can you please book me a flight ticket from LAX to SEA? 
 agent: Yes, can you tell me your dates of travel? 
 customer: My dates of travel are from July 15th to July 17th. 
 agent: Do you have any preferences? 
 customer: Yes, I want a single stopover in between my journey. 
 agent: I have found an economy class ticket with a price of 100 and 1 connection. 
 customer: Please proceed. 
 agent: Can I know your name for booking? 
 customer: I am Patrick Walker. 
 agent: Your ticket has been booked. 
 customer: Thank you. 
 agent: Thank you for contacting us.
A:
book