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 would like to travel TX - IAH from WA - SEA.Can you help me to book my flight ticket? 
 agent: Hello. Sure, please provide your travel dates. 
 customer: My travelling dates are 09/10 and 09/12. 
 agent: Please wait for a moment. 
 customer: Ok. 
 agent: Flight number 1000 of Delta airlines is available for you. Ticket price is 100 and the flight has 1 connection. 
 customer: Proceed for booking. 
 agent: May I know your name? 
 customer: I am Paul Rodriguez. 
 agent: Paul, your ticket is booked. 
 customer: Ok, thank you for the information. 
 agent: Thank you for reaching us.
A:
book