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. How can I assist you today? 
 customer: I want to cancel my ticket due to dense fog in my place. 
 agent: Sure, may I know your name to check for the previous reservation? 
 customer: Brandon Collins here. 
 agent: Please allow me a moment. 
 customer: Sure. 
 agent: There is no reservation found under your name. 
 customer: No problem, thank you. 
 agent: Thank you for contacting us.
no_reservation

customer: Hello,. 
 agent: Hello, how can I help you? 
 customer: I already have an reservation to attend a meeting, due to some problems my meeting place has been changed. So I need a few changes in my reservation. 
 agent: Sure, please share me your name? 
 customer: Can you please help me in changing my reservation? My name is Stephanie Smith. 
 agent: OK, please wait a minute. 
 customer: Ok. 
 agent: There is no reservation with your name. 
 customer: No problem, thank you. 
 agent: Thank you.
no_reservation

customer: Hi. 
 agent: Hello, how may I help you? 
 customer: I want to book a ticket from JFK to MCO, can you help me? 
 agent: Sure, can I know your travelling dates? 
 customer: My trip dates are Oct 22 and 24. 
 agent: On which name should I reserve your flight ticket? 
 customer: Book the ticket in the name of Margaret White. 
 agent: Do you have any other specifications? 
 customer: I want to depart and return in the morning. 
 agent: Sorry, there are no flights found on given dates. 
 customer: No problem, thanks for checking. 
 agent: Thank you for reaching us.
no_flight