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: Hi. I am Anna Lewis. 
 agent: Hello, how can I assist you? 
 customer: I want to book a flight ticket to participate in a cultural fest at IL-ORD on 09/07. Can you help me? 
 agent: Sure, please provide your return journey date. 
 customer: 09/09 will be my return. 
 agent: Please share your origin airport code. 
 customer: NV-LAS will be my origin. 
 agent: Please share your specifications. 
 customer: I need a connecting flight. 
 agent: Unfortunately, there is no flights based on your details. 
 customer: No issue. Thank you. 
 agent: Thank you for choosing us.
[A]: no_flight


[Q]: customer: Hello, I am Edward Thompson. 
 agent: Hello, How can I assist you? 
 customer: I am planning for a holiday vacation at Boston, can you please book a flight ticket? 
 agent: Sure, May I know the travel date details? 
 customer: I want to travel on 04/06 and arrival is on 04/08. I do not need connections in between my journey. 
 agent: May I know the source and destination details? 
 customer: My journey starts from Oakland, CA-OAK to Boston, MA-BOS. 
 agent: Sorry, There is no direct flight. Thank you for availing us. 
 customer: Thank you.
[A]: no_flight


[Q]: customer: Hi. 
 agent: Hello. Welcome to Austin airline agency. How can I assist you today? 
 customer: Thank you. I would like to change my existing reservation.Can you help me about it? 
 agent: Sure, may I know your name please? 
 customer: Myself Larry Carter. 
 agent: Please provide your airport codes. 
 customer: My airport codes are FL - MCO and AZ - PHX. 
 agent: Please provide your travelling dates. 
 customer: My travelling dates are 06/25 and 06/27. 
 agent: Please give me a moment. 
 customer: Ok. 
 agent: Unfortunately, there is no flights available under your details. 
 customer: It's ok fine. Thank you for the information. 
 agent: Thank you for reaching us, have a great day.
[A]:
no_flight