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 can I assist you today? 
 customer: I am Katherine Collins planning to visit Houston, can you book a ticket on 04/08 and 04/10? 
 agent: Sure, will you provide your airport codes please? 
 customer: Sure, I want to fly from MCO to IAH. 
 agent: Please give me a moment. 
 customer: Ok. 
 agent: Thank you for waiting. There is a flight with price 100 and the connections 1 is available. Shall I proceed for booking the ticket? 
 customer: Yes, proceed with my booking. 
 agent: Your ticket is booked. The flight number is 1002 and the airline is UA. 
 customer: Thank you. 
 agent: Thank you for reaching us. Have a great day.
A:
book