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

Q: customer: Hello. 
 agent: Hello, how can I assist you? 
 customer: I need to cancel my ticket due to sudden change in my trip, can you aid me in cancellation process? 
 agent: Sure, I am here to aid you. May I know your name please? 
 customer: Amanda wright. 
 agent: Ok, please wait a minute. 
 customer: Ok. 
 agent: Thank you for waiting, sorry no reservation found on your name. 
 customer: No problem, thank you for searching. 
 agent: Thank you for reaching us, have a nice day.

A: no_reservation
****
Q: customer: Hello. 
 agent: Hello. 
 customer: I am Gregory Carter. 
 agent: How may I help you today? 
 customer: Can you please reserve me a flight ticket which is having it's depart time in the afternoon and return in the afternoon? 
 agent: Sure, let me know your travel dates please? 
 customer: I have planned to travel on Jan 11th and return on Jan 13th. 
 agent: Could you please share me your airport codes? 
 customer: I would like to fly from EWR to MCO. 
 agent: Ok, is there any class preference? 
 customer: I prefer connecting flight. 
 agent: Do you need any airline preference? 
 customer: No. 
 agent: Please wait for a while. 
 customer: Ok. 
 agent: Jet Blue airlines is providing a connecting flight with the ticket fare of 100 and depart time is 14:00 PM, arrival time is 16:00 PM. Shall I proceed? 
 customer: Ok, please book this ticket. 
 agent: Your ticket has been confirmed by flight number 1025 and an economy class. 
 customer: Thank you. 
 agent: Thanks for choosing us.

A: book
****
Q: customer: Hi. 
 agent: Hello, how may I help you? 
 customer: I want to change an existing reservation due to an emergency, can you please help me? 
 agent: Sure, may I know your name? 
 customer: Sure, my name is Virginia Williams here. 
 agent: Please wait a moment. 
 customer: Sure, I will wait. 
 agent: Sorry, there are no active reservations on your name to change. 
 customer: Ok, not an issue.Thank you for your information. 
 agent: Thank you for reaching our service.

A:
no_reservation
****