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 Input:
customer: Hello, I am Brandon Jackson. 
 agent: Hello. How may I assist you today? 
 customer: I need to book a flight ticket to attend my sister baby shower function. 
 agent: Ok. Let me know your journey details. 
 customer: I would like to travel from DFW to SEA. My journey dates will be on 11/25 to 11/27. 
 agent: Please wait for a minute, I will check and let you know the details. 
 customer: Sure. 
 agent: Thanks for waiting. You have AA airline with flight number 1009 of price 300 with double connection limit. Can I proceed with this? 
 customer: I need only one connection limit. Please do not proceed for booking. 
 agent: Ok. 
 customer: Thank you. 
 agent: Thank you for reaching us.

Ex Output:
no_reservation


Ex Input:
customer: Hi, I am Samantha Williams. 
 agent: Hello, how can I help you today? 
 customer: My business meeting venue has changed, can you please help me in changing the reservation? 
 agent: Sure, please wait for a while. 
 customer: Ok. 
 agent: Thanks for waiting, there is no reservation found on your name. 
 customer: Ok, thanks for giving information. 
 agent: Thank you.

Ex Output:
no_reservation


Ex Input:
customer: Hi,. 
 agent: Hello. How may I assist you? 
 customer: I want to see the art work in DM Weil Gallery at New York, can you please book me a ticket? 
 agent: Sure, I will help you in booking a ticket. 
 customer: Thank you. 
 agent: From where you are planning to take off? 
 customer: I am planning to start my journey from Charlotte, NC-CLT. 
 agent: Could you please share your journey dates? 
 customer: My journey dates are from 10/14 to 10/16. 
 agent: May I know your landing airport code? 
 customer: Landing point airport code is NY-JFK. 
 agent: Thank you for sharing the details, give me a minute to search for available flights on your route. 
 customer: Ok. 
 agent: Thanks for giving your valuable time. There is a connecting flight of UA airline running on your route with fare 300 having 1019 as flight number. Do you want me to confirm this flight for your journey? 
 customer: Do not confirm. As my budget is only 200. 
 agent: Ok, please provide your name for documentation purpose. 
 customer: Myself Jeffrey Wright. 
 agent: Thank you for approaching us. 
 customer: Thank you.

Ex Output:
no_reservation