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: Hi, I am Pamela Miller. 
 agent: Hello, how can I assist you today? 
 customer: I want to travel from New York, EWR to attend for my sister's marriage anniversary. Will you please aid me in booking a ticket under the price range of 500? 
 agent: Sure, I will help you. May I know your destination airport code? 
 customer: My destination point is Orlando, MCO. 
 agent: Can I have your trip dates? 
 customer: My journey dates are from 06/02 to 06/04. 
 agent: Please wait for a while. 
 customer: Sure, take your time. 
 agent: Thanks for waiting. Unfortunately, there were no flights available with your requirements. 
 customer: That's ok, I will check for another option. Thank you for the response. 
 agent: Thank you for contacting us.
no_flight

customer: Hi. 
 agent: Hello, how may I aid you? 
 customer: Joseph Garcia here. I would like to spend some more days with my family, so please help me in changing my existing reservation. 
 agent: Sure, I am here to help you out. Please allow me a moment. 
 customer: Ok. 
 agent: Sorry  Joseph Garcia, there is no active reservation on your name in our database. 
 customer: That's ok, thank you for your help. 
 agent: Thank you for reaching us.
no_reservation

customer: Hello. 
 agent: Hello. 
 customer: I am Jennifer Hall. 
 agent: How can I help you? 
 customer: I want to cancel my reservation, due to heavy rainfall in Seattle, can you help me? 
 agent: Yes, I can help you. 
 customer: Thank you. 
 agent: Sorry to inform you that there is no reservation found on your name. 
 customer: That's ok, thank you for your information. 
 agent: Thank you for contacting us.
no_reservation