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

Example input: 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.
Example output: no_reservation
Example explanation: 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,. 
 agent: Hello, how can I help you today? 
 customer: I am Stephanie Carter. 
 agent: Thanks for providing your name. 
 customer: On 09/09 I am planning to visit jack London square. Can you book my flight ticket from Detroit , MI - DTW? 
 agent: Sure, may I know your destination airport code? 
 customer: My destination airport code Oakland, CA - OAK. 
 agent: Do you need any halt in between journey? 
 customer: I need a halt between my journey. 
 agent: When do you planned your return date? 
 customer: I intend to return on 09/11. Fare of the ticket should be within 500. 
 agent: Ok, please wait a moment, I will check and get back to you. 
 customer: Sure. 
 agent: We are happy to say that there is a flight found with Hawaiian airline of flight number 1003 and fare is 100. Shall I make this reservation for you? 
 customer: Ok, proceed with my reservation. 
 agent: Your ticket has been confirmed with single connection flight. 
 customer: Thank you for assisting me. 
 agent: Thanks for reaching us, have a nice day.
A:
book