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

Example input: 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.
Example output: no_reservation
Example 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
Q: customer: Hi. 
 agent: Hello, how may I aid you today? 
 customer: Can you find a flight for me from IAH to BOS? 
 agent: Sure, when are you planning to travel? 
 customer: Ok, my journey dates are from Feb 28 to Mar 01. 
 agent: On whose name should I reserve the flight ticket? 
 customer: Sure, I am Matthew Parker. 
 agent: Do you have any specifications to be met? 
 customer: I need a connecting flight. 
 agent: We found a flight in an airline Frontier with 1022 number having a single connection price of 100. Shall I proceed to book? 
 customer: Yes, you can. 
 agent: Your flight ticket has been confirmed. 
 customer: Thanks for your assistance. 
 agent: Thank you for reaching us.
A:
book