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 help you? 
 customer: I made a reservation earlier to visit Phoenix in direct flight but now I want to travel in connecting flight. can you help me in changing my reservation? 
 agent: Sure, I will help you. 
 customer: Thank you. 
 agent: May I know your name? 
 customer: I am Sandra Carter. 
 agent: Please, wait for a moment. 
 customer: Ok. 
 agent: Thank you for waiting, there is no reservation found on your name to proceed for modification. 
 customer: No issue. Thank you. 
 agent: Thank you for approaching us.
[A]: no_reservation


[Q]: customer: Hello. 
 agent: Hello, how can I assist you for the day? 
 customer: Please change my existing reservation due to some health issues? 
 agent: Sure, I am here to help you. May, I know your good name? 
 customer: Sure, I am Kenneth Hernandez. 
 agent: Sorry, we found no reservation on your given name. 
 customer: Ok, not an issue. Thank you for your information. 
 agent: Thank you for reaching us.
[A]: no_reservation


[Q]: customer: Hi. 
 agent: Hello, May I know what kind of service you are looking for? 
 customer: I have to change my travel airport codes because I have given a airport code which is far to my current location. So, I need your help. Will you please help me in changing the details? 
 agent: Sure, I can change your reservation right now. Before that I need to know your good name please? 
 customer: Nancy Jackson here. 
 agent: Ok, wait for some time I will check the reservation on your name and get back to you. 
 customer: Ok. 
 agent: We are sorry to say that, there is no active reservation found on your name. 
 customer: No issue, Thank you for the information. 
 agent: Thanks for approaching us.
[A]:
no_reservation