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. 
 agent: Hello. 
 customer: I am Ashley smith. 
 agent: How can I help you from flight booking agency? 
 customer: I am planning to go for bussiness trip to Minneapolis. Can you please book me a flight ticket? 
 agent: Sure, can you please share your travelling airport codes? 
 customer: My travelling departure and arrival airport codes from SEA to MSP. 
 agent: May I know your preferable journey dates to proceed further? 
 customer: My travellling dates are 03/19 and 03/21. 
 agent: Wait a moment please, let me check the flights availability on this route. 
 customer: Ok. 
 agent: AA airlines is providing the service on this route with 1 connection limit, shall I book your ticket? 
 customer: Sure, you can book the ticket for this flight. 
 agent: Ashley smith, your ticket is confirmed successfully with flight number 1018. 
 customer: Thank you for your valuable services. 
 agent: Thank you for choosing our services, have a safe journey. 
 customer: Most welcome.
book

customer: Hello. 
 agent: Hello. How best can I serve you today? 
 customer: I would like to change my reservation due to some health issues, can you please help me out with that? 
 agent: Sure, I am here to help you with that. 
 customer: Thank you. 
 agent: For changing your reservation, we need to know your name to check your reservation status. So, please forward me your name. 
 customer: Jacob Smith here. 
 agent: Ok, please wait for a moment. 
 customer: Sure. 
 agent: Sorry to inform you that, we have not found any active reservation on your name in our records. 
 customer: That's ok, no problem. Anyway thank you for checking out. 
 agent: Thank you for reaching us.
no_reservation

customer: Hello. 
 agent: Hello, how can I assist you now? 
 customer: I am Shirley Rodriguez. Can you book a flight ticket in my preferable travel dates June, 20 and June, 22? 
 agent: Sure, I am happy to help with that. 
 customer: Thank you. 
 agent: Can I have your travel dates please? 
 customer: I have already mentioned above. 
 agent: Ok, please let me know airport codes of your journey locations. 
 customer: Sure, my airport codes are PHX and OAK. 
 agent: Do you have any specific timings to travel? 
 customer: My depart time should be at afternoon and return time should be at morning. 
 agent: Ok, please wait a moment. 
 customer: Sure. 
 agent: Sorry Shirley Rodriguez, no flight is available to you on your dates. 
 customer: Ok, not a problem. 
 agent: Thank you for choosing us, have a good day. 
 customer: Thank you.
no_flight