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, I am Raymond Rodriguez. 
 agent: Hello, how can I help you today? 
 customer: I would like to visit overview of city. can you please help me to book a ticket from DCA to MSP? 
 agent: Sure, when are you willing to travel? 
 customer: My travelling dates will be on 09/19 to 09/21. 
 agent: Ok, any other specifications? 
 customer: I need a connecting flight. 
 agent: Ok, flight- 1026, airline- UA, price- 100 with connection matches your requested details. 
 customer: You can proceed to booking. 
 agent: Ok, your ticket has been processed. Thank you for reaching us. 
 customer: Thank you.

A: book
****
Q: customer: Hello. 
 agent: Hello. How can I assist you? 
 customer: I want to travel from HOU to AUS. Can you please help me for booking? 
 agent: Sure, I will help you. Your good name please? 
 customer: Sure, my name is James Carter. 
 agent: Could you please share your planned journey dates? 
 customer: My planned journey dates are 10 and 12 on the month of March. 
 agent: Let me know your connection limit. 
 customer: I need a connected flight. 
 agent: Which class would you prefer for your journey? 
 customer: I am fine with any class. 
 agent: Do you have any other preferences? 
 customer: My depart time is evening. 
 agent: Give me a minute, I will let you know the flight availability. 
 customer: Sure. 
 agent: Thank you for your time, there were no flights available that matches your requirements. 
 customer: Ok, thanks for your assistance. 
 agent: Thank you for approaching us.

A: no_flight
****
Q: customer: Hello. 
 agent: Hello. How can I aid you? 
 customer: I have to go New York for attending a summit there, can you please book a flight ticket from Las Vegas? 
 agent: Sure, help me with the travelling dates. 
 customer: My departure date is 02/20 and please book my return ticket also on 02/22. 
 agent: May I know your airport codes? 
 customer: I want to fly from LAS airport and destination airport is JFK. 
 agent: May I know your name? 
 customer: Sure, my name is Patrick Collins. 
 agent: Sorry, there is no flight on your requested dates. 
 customer: Oh! It's ok no problem, I will go with another airline. 
 agent: Thank you for reaching us. 
 customer: Thank you for your information.

A:
no_flight
****