Q: 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
customer: Hi. 
 agent: Hello. How can I help you? 
 customer: I am planning to go for JFK from EWR, can you please help me out? 
 agent: May I know your travelling dates please? 
 customer: My travelling dates are 04/26 and 04/28. 
 agent: There is a flight with single connection, can I proceed for booking? 
 customer: Ok, please confirm my ticket with Linda Davis. 
 agent: Your booking is done in 1027 flight? 
 customer: Thank you for your help. 
 agent: Thank you.
A:
book