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

Q: customer: Hello. 
 agent: Hello. How may I assist you? 
 customer: I have to attend for a client meeting in ATL. Can you please make a reservation from IAD? 
 agent: Sure, I will help you. May I know your trip dates please? 
 customer: Sure, my travelling dates are May 14 - May 16. 
 agent: Can I have your good name please? 
 customer: My name is Sharon Allen. 
 agent: Do you need a connecting flight for your trip? 
 customer: I need a connecting flight. 
 agent: May I know your timings of your journey? 
 customer: My depart time must be in the afternoon. 
 agent: Do you have any other specifications? 
 customer: No. 
 agent: Sharon Allen, no flights has been found on your specifications. 
 customer: Ok, no problem. Thank you for the information. 
 agent: Thank you for approaching us.

A: no_flight
****
Q: customer: Hi. 
 agent: Hello, how may I aid you? 
 customer: Can you book a connecting flight to Oakland? 
 agent: Sure, could you please provide your willing dates to travel? 
 customer: My travel dates would be from 10/01 to 10/03. 
 agent: Ok, may I know the code of airport to search for the flight? 
 customer: I am planning a business trip and my airport codes are MCO to OAK. 
 agent: Ok, please wait a moment. 
 customer: Sure. 
 agent: Ok, there is a flight 1019 in AA airline matching your details with price 100. Shall I proceed? 
 customer: I am fine with this flight and you can book it. 
 agent: May I know your name to book the ticket? 
 customer: Nicholas Lee here. 
 agent: Ok, your booking is done. 
 customer: Thanks for your help. 
 agent: You are welcome.

A: book
****
Q: customer: Hello. 
 agent: Hello, how can I assist you today? 
 customer: I need to cancel my recent reservation due to some issues, can you help me in doing that? 
 agent: Sure, I will help you with that. 
 customer: Thank you. 
 agent: Let me know your name to check your reservation? 
 customer: I am Jonathan Moore. 
 agent: Ok, please wait a moment. 
 customer: Sure. 
 agent: I have checked in reservation list to cancel your ticket, but could not find any reservation with your name. Thank you for waiting. 
 customer: Ok, no issues. Thank you for the information. 
 agent: Thank you for choosing us.

A:
no_reservation
****