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

[EX Q]: customer: Hello. I am Joshua Collins. 
 agent: Hello, how can I help you today? 
 customer: Can you please book a flight ticket from DTW to JFK? 
 agent: Sure, I will help you with it. Please share me your planned travel dates to proceed further. 
 customer: Thank you. Sure, I need to travel on dates of Sept 21 and Sept 23. 
 agent: Do you prefer any specific time for you depart and return? 
 customer: Yes, I would like to depart in morning time only. 
 agent: Please let me know if you have any other preferences. 
 customer: I need connection 1 so please check with that. 
 agent: Thank you for providing all the essential details, please wait for a while. 
 customer: Sure, I am happy to wait for your response. 
 agent: We are sorry to inform you that we don't have any flight available in the morning time on given dates by you. 
 customer: Oh! It is sad to hear. Anyway, thank you for your time. 
 agent: Thank you, looking forward to serve you better next time. 
 customer: Most welcome.
[EX A]: no_flight

[EX Q]: customer: Hello. 
 agent: Hello. How can I assist you today? 
 customer: I have a meeting with foreign delegates at San Francisco. Can you help me in booking a ticket? 
 agent: Sure, please share your airport codes. 
 customer: The airport codes are EWR and SFO respectively. 
 agent: On which dates do you want to travel? 
 customer: I am planning my journey on dates 02/26 and 02/28. 
 agent: Please may I know your name? 
 customer: My name is Samuel Moore. 
 agent: Flight 1022 of AA airline  available for you on your route with 1 connection. 
 customer: Please book the ticket. 
 agent: Your ticket is confirmed successfully. 
 customer: Thank you for your assistance. 
 agent: Thank you for choosing us, have a good day.
[EX A]: book

[EX Q]: customer: Hello. 
 agent: Hello,. How can I amend you today? 
 customer: My plan to go for a holiday trip got postponed, could you please help me in changing my reservation? 
 agent: Sure, we are here to assist you. 
 customer: Thank you. 
 agent: Let me know your name for further process. 
 customer: My name is Ronald King. 
 agent: Please, wait. 
 customer: Ok. 
 agent: Thanks for your time. There is no reservation found on your name in our database. 
 customer: Ok, thanks for the information. 
 agent: Thank you for opting us.
[EX A]:
no_reservation