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. 
 customer: I am Timothy Martin. 
 agent: How may I help you? 
 customer: I need to book a flight ticket from New York, NY-EWR to Boston, MA-BOS. 
 agent: Sure, help me with the travel dates? 
 customer: I want to travel on dates 10/16 and 10/18. 
 agent: We do not found any flights running in your preferred routes. 
 customer: No problem, thank you for your help. 
 agent: Thank you for opting us.
[EX A]: no_flight

[EX Q]: customer: Hello. 
 agent: Hello, how may I help you today? 
 customer: Due to urgent work, I would like to change my reservation to some other date, can you please help me out with that? 
 agent: Sure, we are here to help you. 
 customer: Thank you for your positive response. 
 agent: May I know your good name please? 
 customer: Sure, my name is Christine Rodriguez. 
 agent: Please wait a minute. 
 customer: Ok. 
 agent: Sorry, there is no reservation on your name in our database. 
 customer: It's ok no problem. Thank you for your information. 
 agent: Thank you for opting us.
[EX A]: no_reservation

[EX Q]: customer: Hello, Margaret Allen here. 
 agent: Hello Allen, how may I assist you? 
 customer: I want to cancel my recent reservation,  as I postponed my vacation because of bad weather. Can you please help me with this? 
 agent: Ok Allen, please hold on for a moment. 
 customer: Sure. 
 agent: I found a reservation on your name. Shall I proceed to cancel? 
 customer: Yes, please cancel. 
 agent: Your reservation has been cancelled. 
 customer: Thank you for the help. 
 agent: Thank you for reaching us. Have a good day.
[EX A]:
cancel