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 can I help you? 
 customer: I want to book a flight ticket from LAX to SEA. Can you please help me in that? 
 agent: Sure, I will help you in booking. Can you please share your trip dates? 
 customer: My trip dates are Dec 19 to Dec 21. 
 agent: Do you have any connection limit preference? 
 customer: I need a connecting flight. 
 agent: Sorry, there are no flights found for the given dates. 
 customer: Ok, no problem. Thank you. 
 agent: May I know your name for documentation purpose? 
 customer: Myself Jennifer Harris. 
 agent: Thank you for choosing us.

A: no_flight
****
Q: customer: Hello. 
 agent: Hello. How can I support you today? 
 customer: I am Lisa Scott, please find a flight for me on 12/22 and returning on 12/24. I need a flight with single connection. 
 agent: Sure, please provide your price limit. 
 customer: Sure, it is 5000. 
 agent: Ok, please provide your travelling airport codes. 
 customer: I will fly from TX-AUS to CA-SFO to attend a friend Wedding. 
 agent: Ok, please wait for a while. 
 customer: Sure. 
 agent: Thank you for being patient, No flights were available with your given details. 
 customer: Ok, thanks for the information. 
 agent: Thank you for connecting with us.

A: no_flight
****
Q: customer: Hi,. I am Catherine Collins. 
 agent: Hello, how can I provide assistance to you? 
 customer: I am planning to visit Arlington national cemetery hop-on hop-off tour in Washington DC - DCA. Can you avail me to book a flight with one halt? 
 agent: Sure, May I know from where you wish to board? 
 customer: I want to board from Oakland, CA - OAK. 
 agent: On which dates would you like me to book a flight ticket for you? 
 customer: I want to fly on 08/05 and recur on 08/07. 
 agent: Sorry to inform you, currently no flights are running at that locations due to abnormal weather conditions. 
 customer: Ok, thanks for the information. 
 agent: Thank you for choosing us.

A:
no_flight
****