Detailed Instructions: 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 aid you today? 
 customer: I am Emma White. I want to book a flight ticket from HOU to DTW. Could you help me in booking? 
 agent: Sure, we are here to help you. Are you okay with connecting flight or you need a direct flight? 
 customer: I need connecting flight. 
 agent: On what dates you want me to make the reservation? 
 customer: My travelling dates are from 10/01 to 10/03. 
 agent: Thank you for providing all necessary details, please stand by I will check and revert to you. 
 customer: Ok. 
 agent: May I know your name? 
 customer: I have already mentioned above. 
 agent: Ok, there are no flights found on your details. 
 customer: That's ok, no problem. Thank you. 
 agent: Thanks for approaching us.
A:
no_flight