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: Hello, I am Laura Collins. 
 agent: Hello, how can I aid you today? 
 customer: As I am a scientist, I want to attend Science Festival with my students at Minneapolis & St. Paul, MN - MSP. 
 agent: Ok. 
 customer: Can you please help me for booking a ticket on 10/16? 
 agent: Sure, May I know your price limit? 
 customer: I can afford up to 200. 
 agent: When you are willing to return? 
 customer: I intend to return on 10/18. 
 agent: Help me with your source airport code to proceed further. 
 customer: My source is New York, NY - LGA. 
 agent: Thanks for being patience, there is a flight available with Delta airline, flight number 1004 with fare 200 and a lay by. Shall I proceed to reserve? 
 customer: Ok, you can proceed for booking. 
 agent: Your reservation has been done successfully. 
 customer: Thank you. 
 agent: Thank you for reaching us.

A: book
****
Q: customer: Hello. 
 agent: Hello, how can I assist you today? 
 customer:  I am Pamela Gonzalez. I want to cancel my recent reservation, because I want to travel  with my friends by road. Can you help me in cancelling? 
 agent: Sure, please wait for a moment. 
 customer: Ok. 
 agent: Sorry to say that, no reservation was found with your good name. 
 customer: Thank you for your help. 
 agent: Thank you for reaching us.

A: no_reservation
****
Q: customer: Hello. 
 agent: Hello, how may I help you today? 
 customer: I need to cancel my reservation due to cancellation of my visa process. Can you help me with it? 
 agent: Sure, may I know your good name please? 
 customer: Gregory Hill is my name. 
 agent: Ok, please wait for a while, I will check and get back to you. 
 customer: Sure, I will wait. 
 agent: Sorry, there was no reservation found with your name. 
 customer: Ok, no issues. Thanks for your service. 
 agent: Thank you for opting us.

A:
no_reservation
****