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 Steven Scott. 
 agent: Hello, how may I serve you for the day? 
 customer: I want to change my reservation as the beer festival which I want to go got postponed. 
 agent: Ok. 
 customer: Can you please help me? 
 agent: Sure. Please wait a minute. 
 customer: Ok. 
 agent: Thanks for your time, we did not find any reservation with your name. 
 customer: It's ok, no problem. Thank you for your information. 
 agent: Thank you for availing us.

A: no_reservation
****
Q: customer: Hello. 
 agent: Hello. 
 customer: I am Angela Baker. 
 agent: How may I aid you today? 
 customer: Can you find a flight from HOU to SEA, to visit the Chihuly Garden and Glass. 
 agent: Sure, I am here to help you out. Please provide me your trip dates. 
 customer: Help me with booking ticket from 08/20 and 08/22. 
 agent: Sure  Angela Baker, there is a flight with 1 stop and price is 100 in economy class, can I proceed with it? 
 customer: Yes, please. 
 agent: Your ticket has need with 1014 flight in Delta airlines. 
 customer: Thanks for your help. 
 agent: Thank you for reaching us.

A: book
****
Q: customer: Hi. 
 agent: Hello, how can I guide you for today? 
 customer: I want to cancel my recent reservation due to sudden cancellation my trip. Can you help me? 
 agent: I will help you with that. 
 customer: Thank you. 
 agent: May I know your name? 
 customer: Ashley Davis. 
 agent: Please give me a minute, I will check the status of your existing reservation. 
 customer: Ok. 
 agent: Sorry, there is no reservation found under your name in our database. 
 customer: That's Fine. Thank you. 
 agent: Thank you for contacting us, have a nice day.

A:
no_reservation
****