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

[EX Q]: customer: Hello. 
 agent: Hello, how can I assist you? 
 customer: Can you help me booking a flight ticket from DTW to AUS? 
 agent: Sure, I can help you with that. May I know your travel dates please? 
 customer: I will start on 05/08 and return on 05/10. 
 agent: Do you need break in between your journey? 
 customer: I need a direct flight. 
 agent: Please let me know if you have any other specifications. 
 customer: No. 
 agent: May I know your good name please? 
 customer: I am Richard Lopez. 
 agent: Sorry to inform you that there are no direct flights available for you on those dates. 
 customer: No problem, thank you for the information. 
 agent: Thank you for reaching us.
[EX A]: no_flight

[EX Q]: customer: Hi. I ma Margaret Thompson. 
 agent: Hello, How can I assist you? 
 customer: I would like to book a ticket from MSP, can you help me with booking to SFO? 
 agent: Sure, Please help me with your travel dates. 
 customer: My travelling dates are from 05/14 to 05/16. 
 agent: Please give a minute. 
 customer: Ok. 
 agent: Sorry, No flights found with your preferable dates. Thank you, Have a great day. 
 customer: Thank you.
[EX A]: no_flight

[EX Q]: customer: Hello. 
 agent: Hello, how can I help you today? 
 customer: My name is James White. I am planning to travel from SEA to OAK, could you please help me with booking a flight ticket? 
 agent: Can I know your dates of journey? 
 customer: My travelling dates are 01/16 and 01/18. 
 agent: Sorry James, I didn't find any flight basing on your details. 
 customer: That's really sad. Anyways, thank you for the information. 
 agent: You are welcome.
[EX A]:
no_flight