Teacher: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
Teacher: Now, understand the problem? Solve this instance: customer: Hi. 
 agent: Hello, how may I assist you today? 
 customer: Please help me to book a flight ticket from MCO to CLT. 
 agent: Sure, may I know your planned travel dates? 
 customer: My travel dates are from Oct, 15 to Oct, 17. 
 agent: Do you have any limits on number of connections? 
 customer: I need a single connecting flight. 
 agent: May I know your name for the booking? 
 customer: Christopher Gonzalez. 
 agent: Do you have any another specifications for the booking? 
 customer: I prefer to return in the morning. 
 agent: Sorry, no flights are available on your route. 
 customer: Thank you for your information. 
 agent: Welcome, thank you for reaching us.
Student:
no_flight