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: Hello. 
 agent: Hello. By what way can I oblige you at this moment? 
 customer:  I am Anna Harris want to visit Washington to meet my nephew. 
 agent: Ok. Can I have your landing point? 
 customer: I will depart to DC-IAD. 
 agent: May I know, when you are willing to travel? 
 customer: My travelling dates are 05/26 and 05/28. 
 agent: What is your other airport code? 
 customer: I will depart from TX-AUS. 
 agent: Please mention, if you have any specifications. 
 customer: I need a connection flight. 
 agent: Thanks for your details. You have no flights that matches with your information. 
 customer: Thank you for providing information. 
 agent: Thank you for choosing us, have a pleasant day.
A:
no_flight