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: Hi. 
 agent: Hello. How can I assist you? 
 customer: Due to some issues, I am willing to change my existing reservation. Can you please help me for this? 
 agent: Sure, can I know your name please? 
 customer: I am Rebecca Lee. 
 agent: Ok, wait a moment please. 
 customer: Sure. 
 agent: Sorry, there is no reservation found on your name. 
 customer: Oh! It may not be booked properly due to some technical issues while booking. Thank you for checking. 
 agent: Thank you for approaching us.

A: no_reservation
****
Q: customer: Hello. 
 agent: Hello. How can I aid you? 
 customer: I am Jonathan Williams. Can you please cancel my reservation as meeting with my client got postponed? 
 agent:  Ok, please wait I will revert you. 
 customer: Sure. 
 agent:  We found reservation on your name and it is cancelled. 
 customer: Ok. Thank you. 
 agent:  Thank you for availing us.

A: cancel
****
Q: customer: Hi. 
 agent: Hello, how may I aid you? 
 customer: I would like to visit New York to meet my childhood friend, can you please book me a ticket from HOU to LGA? 
 agent: Sure, I am gleeful to help you. Could you please provide your travelling dates to search for the flight? 
 customer: Ok, I want to travel on 04/24 and back on 04/26. 
 agent: Just hold on a moment, I will check flight availability in this route. 
 customer: Ok, take your time. 
 agent: Sorry to say, no flights were found on your route. 
 customer: It's ok, no problem. Thank you for your response. 
 agent: May I know your name for documentation purpose? 
 customer: My name is Steven Garcia. 
 agent: Thank you for reaching us, have a nice day. 
 customer: Most welcome.

A:
no_flight
****