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: Hi. I am Jonathan Johnson. 
 agent: Please let me know, how can I support you today? 
 customer:  I want to cancel my recent  reservation due to sudden cancellation of my trip. Can you help me. 
 agent: Sure, we are happy to help to you. 
 customer: Thank you. 
 agent: Please stay online. 
 customer: Ok. 
 agent: Sorry to say that, there is no active reservation found on your name. 
 customer: That's Fine. Thank you. 
 agent: Thank you for communicating with us.

Ex Output:
no_reservation


Ex Input:
customer: Hi, I am Jack Lewis. 
 agent: Hello, how may I aid you? 
 customer: Owing an emergence, I want to cancel my recent reservation. 
 agent: Sure, I will help you. 
 customer: Can you please help me with it? 
 agent: Please wait for a while. 
 customer: Ok. 
 agent: Thanks for your time. There is no active reservation found in your name to cancel. 
 customer: No problem, thanks for the information. 
 agent: Thank you for availing us.

Ex Output:
no_reservation


Ex Input:
customer: Hello, I am Linda Robinson. 
 agent: Hello, how can I help you today? 
 customer: I would like to travel to SFO from OAK to celebrate flowers festivals. can you please help me to book a ticket? 
 agent: Sure, help me with your travelling dates? 
 customer: My travelling dates will be on 01/08 to 01/10. 
 agent: Ok, any specific requirements? 
 customer: I need a connecting flight. 
 agent:  Ok, flight- 1005, airline- Southwest, price- 200 with connection-1 matches your requested details. 
 customer: You can proceed to booking. 
 agent: Ok, your ticket has been processed. 
 customer: Thank you. 
 agent: Thank you for opting us.

Ex Output:
book