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: Hello, This is Amanda Edwards. 
 agent: Hello. How may I help you? 
 customer: As I am travelling to Chicago to take part in Army day celebration, please book a plane ticket. 
 agent: Sure. Can you please provide your travel dates and airport codes. 
 customer: Flight details IL - ORD to NC - CLT. Travel dates are from 08/31 to 09/02. With price limit 1000 and no connection. 
 agent: OK. We have found that, there are no flights available for your travel dates. 
 customer: OK. Thanks for your information. 
 agent: Thank you for choosing us for your ticket booking. Have a nice day. 
 customer: You too.
no_flight