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: 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.
Solution is here: no_reservation
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

Now, solve this: customer: Hello. 
 agent: Hello. How may I help you? 
 customer: I want to book a flight ticket from SEA to LGA. Could you help me in booking? 
 agent: Sure, can you provide your trip dates? 
 customer: My travelling dates are from Jan 20 - 22. 
 agent: Do you need any connections? 
 customer: I prefer for connecting flight. 
 agent: Are there any other preferences? 
 customer: I need to travel in normal-cost airline. 
 agent: Do you have any class preference? 
 customer: No. 
 agent: May I know your name? 
 customer: Samuel Anderson. 
 agent: Direct flight number 1008 with price 100 in economy class is available. Is it ok? 
 customer: Yes, please proceed. 
 agent: Your ticket has been booked. 
 customer: Thank you for helping me.
Solution:
book