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
Problem:customer: Hi. 
 agent: Hello. 
 customer: I am Brian Taylor. 
 agent: How can I assist you? 
 customer: I am planning to travel from IAH to SEA. 
 agent: Sure Taylor, can I know the travel dates please? 
 customer: My travelling are 12/29 to 12/31. 
 agent: There is a flight in Delta airline with price 300, can I book it? 
 customer: Proceed for booking. 
 agent: Your ticket has been booked with number 1025. Thank you for approaching us. 
 customer: Thank you.
Solution:
book