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 may I help you? 
 customer: I am Joshua Martinez. I want to book a flight from PHX to reach MSP to meet my high school friends. Can you book a connecting flight for me? 
 agent: Sure, may I know your journey dates? 
 customer: I have planned to travel on July 2nd and return on July 4th. 
 agent: Do you need a economy class? 
 customer: No. 
 agent: Can I know your requirements? 
 customer: I would like to depart at evening time. 
 agent: Ok, wait a minute. 
 customer: Ok. 
 agent: Sorry, there are no flights available. 
 customer: Ok, no problem. Thank you. 
 agent: Thank you for choosing us.
[EX A]: no_flight

[EX Q]: customer: Hello. 
 agent: Hello. How can I help you? 
 customer: I want to cancel my recent reservation. Can you help me out? 
 agent: Sure, can you help me with your name? 
 customer: Deborah Lee. 
 agent: Sorry, there is no reservation found under your name. 
 customer: That's ok. Anyways, thank you. 
 agent: Thank you for reaching us.
[EX A]: no_reservation

[EX Q]: customer: Hello. 
 agent: Hello. How may I assist you now? 
 customer: I would like to meet my friend on his birthday at Oakland, please help me in booking a ticket from SEA to OAK. 
 agent: Sure, I will help you with that. Can you please provide your preferable dates of travelling? 
 customer: I would like to plan my journey on Jan 4 and return on Jan 6. 
 agent: On whose name I have to book the flight ticket? 
 customer: My name is Anthony Johnson. 
 agent: Do you have any connection limit? 
 customer: I need a connecting flight for my trip. 
 agent: Any more specifications do you have? 
 customer: I prefer normal-cost airlines. 
 agent: Please wait a moment to check the flights. 
 customer: Sure, take your time. 
 agent: Unfortunately there are no flights running on your route with your required preferences. 
 customer: Ok, no problem. Thank you for your information. 
 agent: Thank you for approaching us, have a great day.
[EX A]:
no_flight