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, I am Deborah Clark. 
 agent: Hello, how can I help you today? 
 customer: I would like to travel from LGA to attend my business meeting. Could you please help me to book a ticket to SEA? 
 agent: Sure, please share your planned trip dates? 
 customer: My travelling dates will be on 07/12 to 07/14. 
 agent: Ok, any other requirements to be met? 
 customer: I need a connecting flight. 
 agent: Ok, please wait for a while. 
 customer: Ok. 
 agent: Thanks for waiting, we found a direct flight, shall I proceed? 
 customer: No, do not proceed. Thank you for your information. 
 agent: Ok, no issues. Thank you for reaching us.

A: no_flight
****
Q: customer: Hello. 
 agent: Hello. How may I assist you today? 
 customer: I am looking for a flight ticket from LAS to SEA, can you help me? 
 agent: Ok, may I know your travel dates? 
 customer: Sure, I am planning from 10/07 to 10/09. 
 agent: Sure, may I know your name to proceed further? 
 customer: Sure, my name is Samuel Brown. 
 agent: Sorry Brown, based on your request there is no flights. 
 customer: It's ok. Thank you for your response. 
 agent: Thanks for contacting us, have a great day.

A: no_flight
****
Q: customer: Hi. 
 agent: Hello, how may I serve you today? 
 customer: I want to travel from DFW to LGA, can you please help me to book a flight ticket? 
 agent: Sure, please share me your planned journey dates? 
 customer: My travel dates are in the month of Feb from 27th to 29th. 
 agent: May I know your connection limit? 
 customer: I prefer to travel on a connecting flight. 
 agent: Do you have any other requirement? 
 customer: No, thanks for asking. 
 agent: Please mention your good name? 
 customer: Jessica Green here. 
 agent: Thank you for your name, sorry there is no flight available on your given journey data. 
 customer: That's ok, thank you for your service. 
 agent: Thank you for reaching us, we hope see you again.

A:
no_flight
****