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. 
 agent: Hello. How may I assist you? 
 customer: I have to attend for a client meeting in ATL. Can you please make a reservation from IAD? 
 agent: Sure, I will help you. May I know your trip dates please? 
 customer: Sure, my travelling dates are May 14 - May 16. 
 agent: Can I have your good name please? 
 customer: My name is Sharon Allen. 
 agent: Do you need a connecting flight for your trip? 
 customer: I need a connecting flight. 
 agent: May I know your timings of your journey? 
 customer: My depart time must be in the afternoon. 
 agent: Do you have any other specifications? 
 customer: No. 
 agent: Sharon Allen, no flights has been found on your specifications. 
 customer: Ok, no problem. Thank you for the information. 
 agent: Thank you for approaching us.

A: no_flight
****
Q: customer: Hello. 
 agent: Hello. How can I help you today? 
 customer: I am looking for a flight which will be travelling from Denver to EWR. Can you please help me in this? 
 agent: Sure, I am gleeful to help you with that. May I know your travelling dates, please? 
 customer: My travel dates are from Oct 24 to Oct 26. 
 agent: Can I know your connection limit? 
 customer: I am fine comfortable with minimum 1 connection limit. 
 agent: Do you have any class preference? 
 customer: No that's it, thank you. 
 agent: Is there any other requirements regarding on your journey? 
 customer: No. 
 agent: There is a connecting flight-1000 available in Jet Blue Airlines with a fare of 100. Shall I book it? 
 customer: Please proceed my booking with my name of David Thompson. 
 agent: David Thompson, your booking is done in economy class. 
 customer: Thank you so much.

A: book
****
Q: customer: HI. 
 agent: Hello. How may I be of your address? 
 customer: I want to book a flight ticket to Las Vegas with price under 1000. Can you please help me with it? 
 agent: Sure, can I know your connection limit? 
 customer: I need a single connection. 
 agent: Please let me know your boarding and landing points. 
 customer: Airport codes are HOU-LAS. 
 agent: Kindly share your planned travelling dates to proceed further. 
 customer: Travel dates are 04/03 and 04/05. 
 agent: Please wait a while. 
 customer: Ok. 
 agent: We found a Frontier airline matching your essential details with one connection and the flight number-1006. 
 customer: Please proceed booking with the name Stephen Evans. 
 agent: Your booking has been processed successfully. 
 customer: Thanks for the help. 
 agent: You're welcome. Happy journey.

A:
book
****