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: Hi. 
 agent: Hello, how may I help you today? 
 customer: I want to cancel my recent reservation owing to an emergency. 
 agent: Sure, may I know your good name? 
 customer: My name is Richard Campbell. 
 agent: I have checked in reservation list to cancel your ticket, but could not find any reservation with your name. 
 customer: Thank you. 
 agent: Thank you for opting us.
answer:
no_reservation


question:
customer: Hello. 
 agent: Hello! tell me how may I help you? 
 customer: Can you help me to change my existing reservation? 
 agent: OK, can you please tell me your name ? 
 customer: Yes, my name is William Thompson. 
 agent: Sorry, William  no reservation found on your name. 
 customer: Ok, thank you. 
 agent: Thank you.
answer:
no_reservation


question:
customer: Hi. 
 agent: Hello, how may I help you? 
 customer: Please help me in booking flight ticket from SEA to EWR to attend an event. 
 agent: Sure, may I know your trip dates please? 
 customer: My trip dates are Nov 08 to Nov 10. 
 agent: Do you have any other requirements? 
 customer: I prefer to travel in connecting flight. 
 agent: Can I know your name please? 
 customer: Stephen Hall here. 
 agent: Ok, please wait for a while. 
 customer: Sure. 
 agent: Thank you for waiting and we have found a flight in economy class with 1 connection in American airlines and the fare of your flight will be 100. Do you like me to proceed your booking with this flight? 
 customer: You can proceed. 
 agent: Ok, your ticket is booked with the flight number 1005. 
 customer: Thank you for booking. 
 agent: Most welcome.
answer:
book