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: Hello, how can I aid you? 
 customer: I would like to travel from BOS to CLT as a business trip. 
 agent: Sure, can you share your journey dates? 
 customer: My trip dates are 09/26 and 09/28. 
 agent: Do you have any preferences? 
 customer: I need break in my journey. 
 agent: May I know your name? 
 customer: Emma Harris here. 
 agent: Sorry, there is no flight on your given dates. 
 customer: No problem, Thanks for the information. 
 agent: Thank you for opting us.

A: no_flight
****
Q: customer: Hello, I am Ryan Roberts. 
 agent: Hello, how can I assist you? 
 customer: I need to fly Austin for my brother's engagement, could you please help me in booking from JFK to AUS? 
 agent: Sure, when are you planning to travel? 
 customer: My journey is from 03/03 to 03/05. 
 agent: Please provide your specifications. 
 customer: I need a halt in mu journey. 
 agent: Unfortunately, there is no flights available based on your details. 
 customer: Ok, no worries. Thank you. 
 agent: Thank you.

A: no_flight
****
Q: customer: Hello. 
 agent: Hello, how can I help you? 
 customer: I am Robert Jackson, I want to cancel my reservation due to ill health. 
 agent: Sure, I am happy to help you. Please wait for a moment. 
 customer: Ok, sure. 
 agent: I am unable to find your ticket booking to cancel your ticket. 
 customer: It's ok, anyway thank you for the information. Have a nice day. 
 agent: Thank you for reaching us, have a nice day.

A:
no_reservation
****