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
One example is below.
Q: customer: Hi. 
 agent: Hello. How can I help you? 
 customer: I would like to change my existing reservation as my plan to go for a holiday trip got postponed. Can you please help me with this? 
 agent: Sure, may I know your name please? 
 customer: My name is Anthony Phillips. 
 agent: Please wait a moment. 
 customer: Sure. 
 agent: Unfortunately there is no reservation found with your given name. 
 customer: Not a problem, thank you for checking. 
 agent: Thank you for choosing us.
A: no_reservation
Rationale: Here the customer has not asked for any booking, he just wanted to update his already booked flight, so the status would be no_reservation
Q: customer: Hello. I am Robert Campbell. 
 agent: Hello, how can I help you today? 
 customer: Can you help me in booking a plane ticket with fare 5000? 
 agent: Sure, may I know your depart and arrival dates? 
 customer: I will depart on 03/12 as I have to attend a technical seminar. After that, my return will be on 03/14. 
 agent: May I know your boarding and landing airport codes? 
 customer: My source code  is Dallas & Fort Worth, DFW and destination point is Detroit, DTW. 
 agent: Do you have any other requirements? 
 customer: I need a stopover in between my journey. 
 agent: OK, please wait for a while. 
 customer: Ok. 
 agent: Thanks for waiting. Sorry to say you there is no flight found with your given details. 
 customer: No problem. Thank you. 
 agent: Thank you for opting us.
A:
no_flight