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, I am Michelle Parker. 
 agent: Hello, how can I be your helping hand today? 
 customer: As, I am a science student, I want to visit Perot Museum of nature and science for my research work in Dallas & Fort Worth, TX - DFW. Can you avail me to book a flight with one way station? 
 agent: Sure, we are happy to help you for booking. 
 customer: Thank you. 
 agent: Let me know your preferred journey dates. 
 customer: I want to fly on 12/09 and I intend to recur on 12/11. 
 agent: Ok, May I know your budget? 
 customer: I have sufficient amount for this trip, I can afford 5000. 
 agent: Ok, Can you please share your boarding point? 
 customer: I want to board from Oakland, CA - OAK. 
 agent: Ok, please wait for a couple of minutes. 
 customer: Sure, make it fast. 
 agent: Sorry to inform you that, there were no flight running at that location due to abnormal weather conditions. 
 customer: Ok, I will choose another way to reach my destination. Anyways thank you for sharing the information. 
 agent: Thank you for approaching our service.
no_flight