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: Hi, Joshua Green here. 
 agent: Hello, how can I help you today? 
 customer: I am planning to book a flight in the afternoon time on 6th of Sept to reach Seattle, so please help me in booking a normal-cost flight. 
 agent: Sure, may I know your source and destination airport codes? 
 customer: Sure, my source and destination airport codes are DCA - SEA. 
 agent: May I know your return date? 
 customer: Sure, I intend to return on 8th of Sept. 
 agent: Do you need halt in between your journey? 
 customer: Yes, I prefer it. 
 agent: Ok, please wait for a moment. 
 customer: Sure. 
 agent: Sorry, there are no flights found with your given dates. 
 customer: No worries, thank you for informing me. 
 agent: Thank you for opting us.
[A]: no_flight


[Q]: customer: Hello. 
 agent: Hello, what kind of service your looking for? 
 customer: Can you please help me with booking a flight ticket from DTW to SFO? 
 agent: Sure, please share me your travel dates. 
 customer: My travelling dates are from Sept 12-14. 
 agent: Do you need direct flight or connecting flight? 
 customer: I would be comfortable with single stop over. 
 agent: For booking, we need your good name. Please mention it. 
 customer: Justin Evans here. 
 agent: May I know your class preferences? 
 customer: I prefer business class. 
 agent: May I know your arrival and depart timings? 
 customer: I am comfortable with any time. 
 agent: We found a Frontier airline and 1001 is flight number with a fare of 700. Shall I proceed? 
 customer: You can proceed with booking. 
 agent: Your ticket is confirmed with a business class. 
 customer: Thank you for the help. 
 agent: Thank you for opting us.
[A]: book


[Q]: customer: Hello. 
 agent: Hello, how may I assist you today? 
 customer: Can you help me to book a flight ticket from AUS to DFW? 
 agent: Sure, may I know on which dates you are willing to travel? 
 customer: My travelling dates are 25 to 27 of May. 
 agent: For further proceeding, may I know your good name? 
 customer: I am William Clark. 
 agent: If you have any specifications please let me know, I'll check availability of flights according to that? 
 customer: I need a connecting flight. 
 agent: Sorry to inform you that, there is no flight found as per your travelling dates. 
 customer: It's ok, not a problem, thank you. 
 agent: Thank you for reaching us.
[A]:
no_flight