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: Hi. 
 agent: Hello. How can I assist you? 
 customer: Due to bad weather conditions, I cannot attend my meeting. Can you help me to change my existing reservation? 
 agent: Sure, may I know your name? 
 customer: Sure, my name is Frank Perez. 
 agent: Please give me a moment to check your ticket status. 
 customer: Ok. 
 agent: Sorry Frank, no reservation is available by your name. 
 customer: That's ok, thank you. 
 agent: Thank you for contacting us.
[EX A]: no_reservation

[EX Q]: customer: Hello. 
 agent: Hello. How may I help you? 
 customer: Could you please help me in flight ticket booking process from ORD to MSP? 
 agent: Sure, can you please tell me your trip dates? 
 customer: Thank you for your response, I want to take off on Nov 11 and book my return ticket also on Nov 13. 
 agent: Do you have any other requirements? 
 customer: I will prefer 1 break in between my journey. 
 agent: Ok, please wait a minute. Thank you for waiting and we have found a flight in economy class with 1 connection in Frontier airlines and the fare of your flight will be 100. Do you like me to proceed your booking with this flight? 
 customer: Please confirm this flight ticket on my name Kathleen Thomas. 
 agent: Your ticket is booked in 1001 flight. 
 customer: Thank you. 
 agent: Most welcome.
[EX A]: book

[EX Q]: customer: Hello. This is Nicholas Young. 
 agent: Hello, how may I help you? 
 customer: I want to book a flight ticket from EWR to MSP. Can you help me in that? 
 agent: Sure, may I know your trip dates please? 
 customer: My trip dates are Apr 17 to 19. 
 agent: Please wait for a while. 
 customer: Ok. 
 agent: Sorry, there is no flight available as per your request. 
 customer: Ok, not an issue. Thank you for giving information. 
 agent: Most welcome.
[EX A]:
no_flight