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: Hi. How can I help you? 
 customer: Myself Stephen Parker. I want to travel from DEN to JFK, can you please book a flight ticket for me? 
 agent: Sure, may I know your date please? 
 customer: I want to travel from 06/10 to 06/12 dates. 
 agent: Hawaiian airlines is matching you with 1029 flight number, can I proceed for booking? 
 customer: Sure, please proceed it. 
 agent: Your booking is confirmed. 
 customer: Thank you so much. 
 agent: Thank you, have a safe journey.
A:
book