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. 
 agent: Hello, how may I support you? 
 customer: Actually I have planned a trip to enjoy my weekend. But, unfortunately I have met with illness. So, I need to cancel my ticket. Can you help me with cancellation? 
 agent: Sure, I will help you. Can I have your name please? 
 customer: Donna Phillips, is my name. 
 agent: Ok, just a moment. 
 customer: Sure. 
 agent: Thanks for your time, no reservation was found based on your good name. 
 customer:  Ok, not a problem. Thanks for your kind information. 
 agent: Thank you for selecting us.

Ex Output:
no_reservation


Ex Input:
customer: Hi. 
 agent: Hello. How may I render you at this moment? 
 customer: Can you please help me with cancelling my recent reservation? 
 agent: Sure, may I know your good name please? 
 customer: My name is Gregory Jackson. 
 agent: OK, please wait for few minutes. 
 customer: Ok. 
 agent: There is no recent reservation found on your name in our records. 
 customer: That's ok, thank you. 
 agent: Thank you for reaching us.

Ex Output:
no_reservation


Ex Input:
customer: Hello. 
 agent: Hello. How can I assist you today? 
 customer: My name is Janet Rodriguez. I have a plan to meet my friend in Seattle, can you help me for booking a flight ticket? 
 agent: Sure, I will help you in booking. Can you please help me with your travel dates? 
 customer: My travelling dates are from 03/30 till 04/01. 
 agent: Ok, may I know your airport codes? 
 customer: My travelling airport codes are from MCO to SEA. 
 agent: Here, I found a flight for you with 1 connection and fare is 100. Shall I proceed? 
 customer: Ok, please proceed for booking. 
 agent: Your booking is done with flight 1015 and airline is Spirit. 
 customer: Thank you for booking. 
 agent: Welcome, have a safe flight.

Ex Output:
book