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

customer: Hello, I am Lisa Young. 
 agent: Hello, how can I assist you? 
 customer: I want to visit Lake Harriet at MSP, can you please book a ticket for me? 
 agent: Sure. Can you please provide the travelling dates? 
 customer: I intend to travel on 08/12 to 08/14. 
 agent: Do you have any limitations? 
 customer: Price 5000. I need 1 connection. 
 agent: Please share your airport codes. 
 customer: Origin: DFW. 
 agent: Thanks for the information. We did not found any flights matching your criterion. 
 customer: Ok. Thank you. 
 agent: Thanks for choosing us.
no_flight

customer: Hello. 
 agent: Hello. How can I assist you? 
 customer: I am Jennifer Clark. I am planning to visit my cousin's home at Philadelphia. Can you please book a ticket from SFO to PHL? 
 agent: Sure, please provide your travel dates. 
 customer: I would like to travel on 06/30 and return back on 07/02. 
 agent: The flight 1025 of Spirit airlines is available on your requested dates with a price of 100. Shall I proceed? 
 customer: Yes, you can proceed the booking. 
 agent: Clark, your reservation has done successfully. 
 customer: Thank you for your service. 
 agent: You are welcome.
book

customer: Hi. 
 agent: Hello. How may I assist you? 
 customer: Please help me to cancel my recent reservation as my plan to meet my grand parents got postpone due to technical issues. 
 agent: Sure. Can I have your name? 
 customer: I am Jessica Mitchell. 
 agent: Please, wait a minute. 
 customer: Sure. 
 agent: Thank you for waiting, we found a reservation on your name. Shall I cancel it? 
 customer: Ok, please cancel the ticket. 
 agent: Your ticket has been cancelled. 
 customer: Thank you for your help. 
 agent: Thank you for opting us.
cancel