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 may I help you? 
 customer: I am Stephanie Turner. Can you help me searching flights with connection 1? 
 agent: Yes, I can help you. 
 customer: Thank you. 
 agent: Could you tell me your dates of travel? 
 customer: My travelling dates are 04/17 and 04/19. 
 agent: Ok, can I know your nearest airport codes? 
 customer: My airport codes are LAX to IAH. 
 agent: Give me a second, I will get back to you. 
 customer: Sure. 
 agent: I have found a flight ticket for you with a price of 100 and 1 connecting flight. 
 customer: That's perfect, proceed to booking. 
 agent: Ok, your ticket is booked with JetBlue airlines. 
 customer: Thank you for confirming my flight ticket. 
 agent: Thank you for consulting us.
A:
book