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 may I aid you today from my end? 
 customer: My name is Brandon Moore. I would like to book a ticket from HOU to LAX. 
 agent: Sure, I am here to help you out. Please provide me your trip dates. 
 customer: My travel dates are Aug 08 and Aug 10. 
 agent: Do you have any requirement? 
 customer: I would like to travel by single connection flight and depart time should be in the evening. 
 agent: Sorry Brandon Moore, there is no flight to reserve a seat for you. 
 customer: No problem, thank you for the information. 
 agent: Thank you for reaching us.
[A]: no_flight


[Q]: customer: Hello. 
 agent: Hello. 
 customer: Myself Kevin Johnson. 
 agent: Kevin, how can I assist you? 
 customer: Can you please help me in booking a flight ticket from DEN to EWR locations? 
 agent: Sure, may I know your trip dates? 
 customer: My travelling dates are from 07/02 and 07/04. 
 agent: Please hold on for a moment. 
 customer: Ok. 
 agent: Sorry, no flight is available on your route. 
 customer: It's ok. Thank you for the information. 
 agent: Thank you for choosing us.
[A]: no_flight


[Q]: customer: Hello. 
 agent: Hello,. How may I assist you? 
 customer: I want to attend the film festival which is going to held at Washington. So, can you please book me a flight ticket on 07/05? 
 agent: Ok. Please provide your airport codes? 
 customer: Sure, I would like to travel from NY-EWR to DC-IAD. 
 agent: May I know your return date? 
 customer: I will come back on 07/07. 
 agent: Please provide flight connections limit? 
 customer: Sure, I need a single connecting flight. 
 agent: Please let me know your name? 
 customer: I am Margaret Robinson. 
 agent: No flight found with your requirement. 
 customer: Ok, no problem. 
 agent: Thanks. 
 customer: Thank you for your time. 
 agent: Have a nice day!.
[A]:
no_flight