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 is below.
Q: 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.
A: no_reservation
Rationale: 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: Hi. 
 agent: Hello, how may I render you? 
 customer: I would like to reserve a flight ticket from MSP to LGA, can you please help me? 
 agent: Sure, please provide your trip dates. 
 customer: My planned travelling dates are May, 27 and 29 respectively. 
 agent: May I know your connection limit? 
 customer: Yes, I prefer to connecting flight for my journey. 
 agent: Which class do you prefer? 
 customer: I am comfortable to travel in any class. 
 agent: May I know your name? 
 customer: Michael Phillips here. 
 agent: Please hold on for a while. 
 customer: Sure, I will wait. 
 agent: Hawaiian airlines with flight 1017 is providing a direct flight and ticket costs you 100 in economy class. 
 customer: Please proceed for booking. 
 agent: Your ticket is confirmed Michael Phillips. Flight departs at 5:00 hours and arrives at 20:00 hours. 
 customer: Thank you for your service. 
 agent: Thank you for reaching us.
A:
book