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: Hello. 
 agent: Hello. 
 customer: I am Elizabeth Campbell. 
 agent: How may I serve you today? 
 customer: I need to book a flight ticket from EWR to PHX, can you please help me for booking? 
 agent: Sure, we are glad to assist you. 
 customer: Thank you. 
 agent: Please let me know if you need a connecting flight. 
 customer: Yes, I need a connecting flight. 
 agent: Do you have any fare fare preference? 
 customer: I can pay up to 200. 
 agent:  On which dates would you like me to book a flight ticket for you? 
 customer: I would like to travel on 11/15 to 11/17. 
 agent: Thank you for sharing your journey details. We found an AA airline matching your essential details with single connection and the fare 200. 
 customer: Ok, proceed for booking. 
 agent: Your seat has been reserved with the flight number-1016. 
 customer: Thanks for your information. 
 agent: Thank you for availing us.
Solution:
book