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
Input: customer: Hello. 
 agent: Hello. How may I assist you? 
 customer: Can you help me to book a flight ticket from EWR to PHL? 
 agent: Sure, may I know your planned travel dates please? 
 customer: I want to take off on 11 July and return on 13 July. 
 agent: May I know your name please? 
 customer: I am Jennifer Rodriguez. 
 agent: Do you need a connecting flight or a direct flight? 
 customer: I am ok with any connecting. 
 agent: May I know your class preference? 
 customer: No. 
 agent: Do you have any other specifications? 
 customer: No. 
 agent: I found an economy class in Hawaiian airlines with fare 100 and it has single connection. Can I book your ticket? 
 customer: Please proceed. 
 agent: Ok, your booking is confirmed with flight number 1016. 
 customer: Thanks for helping me. 
 agent: Thank you for approaching us.
Output:
book