instruction:
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
question:
customer: Hello. 
 agent: Hello. How may I aid you? 
 customer: My name is William Lopez. Actually, I booked a ticket to NYC for a music concert but due to bad weather the trip is cancelled. 
 agent: Ok, so would you like me to change your existing reservation? 
 customer: Yes, help me out. 
 agent: Ok, please hold on for a moment. 
 customer: Sure, take your time. 
 agent: Sorry, I could not find any ticket booked with your name. 
 customer: That's ok. Thank you for your time. 
 agent: Thank you, have a great day.
answer:
no_reservation


question:
customer: Hello, I am Jessica Mitchell. 
 agent: Hello, how may I assist you today? 
 customer: I am planning to conduct a free medical camp in New York, NY - JFK, so help me in booking a flight ticket from Denver, CO - DEN. 
 agent: Sure, when are you planning to travel? 
 customer: I would like to fly on 11/30, return on 12/02. 
 agent: Please wait for a moment. 
 customer: Sure. 
 agent: Thank you for your details, there are no flights available with the given details. 
 customer: No problem, thank you. 
 agent: Thank you.
answer:
no_flight


question:
customer: Hi. I am Patricia Collins. 
 agent: Hello, how may I help you today? 
 customer: My baseball tournament has been postponed due to rainfall.So I would like to change my existing reservation. Can you please help me? 
 agent: Sure, please wait for a while. 
 customer: Ok. 
 agent: Sorry, there is no reservation found on your given name. 
 customer: Ok, not an issue. 
 agent: Thanks for choosing us. 
 customer: Thank you for your service.
answer:
no_reservation