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: Can you help me to book a flight ticket from DFW to JFK? 
 agent: Sure, could you please provide your travelling dates to search for the flight? 
 customer: Ok, my dates are Oct 4th and 6th respectively. 
 agent: May I know your preferable depart and return journey timings? 
 customer: No specifications regarding the flight timings. 
 agent: Do you have any class preferences? 
 customer: Ok, please book a economy class flight. 
 agent: There is a connecting flight 1017 of Southwest airlines, can I proceed? 
 customer: Ok, please book a ticket on the name Angela Johnson. 
 agent: Ok, your booking is done. Thank you for choosing us, have a happy journey. 
 customer: That is good, thank you for assisting me.
[EX A]: book

[EX Q]: customer: Hello. 
 agent: Hello, how may I help you today? 
 customer: I am Amanda Jackson. 
 agent: Ok. 
 customer: I want to cancel my recent reservation, due to ill health. Can you please help me? 
 agent: Sure, we are here to help you. Please wait for a while. 
 customer: Sure, take your own time. 
 agent: Thank you for waiting, there is no active reservation found on your name. 
 customer: That's ok, thank you for checking. 
 agent: Thank you for reaching us.
[EX A]: no_reservation

[EX Q]: customer: Hi. 
 agent: Hello, may I know your name? 
 customer: I just want to change my existing reservation, due to sudden demise of my great grand mother. I am Ronald Adams. 
 agent: Sure, please wait a moment. 
 customer: Sure. 
 agent: Thanks for waiting. Sorry to inform, no reservation found with your name. 
 customer: Ok, not an issue. Thank you for your information. 
 agent: Thanks for reaching us.
[EX A]:
no_reservation