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, I am Janet Gonzalez. 
 agent: Hello, how can I help you? 
 customer: I would like  to establish to new relationships.Could you please book a ticket from HOU to AUS? 
 agent: Sure, can you please provide your journey dates? 
 customer: 04/24 to 04/26. 
 agent: Do you have any specifications? 
 customer: I need single connection. 
 agent: Please wait for a while, I will check and get back to you. 
 customer: Ok. 
 agent: We found a flight with UA airlines, flight number is 1011 with one connection and price is 100. 
 customer: You can proceed. 
 agent: Ok, your ticket has been booked. 
 customer: Thank you. 
 agent: Thanks for choosing us.
A:
book