You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, do you need any help from us?

USER: Can you please book a ticket from CLT to LAX to attend for Sports festival?

ASSISTANT: Sure, could you please share your departure and arrival day?

USER: My scheduled dates are Mar 15 and Mar 17.

ASSISTANT: Ok, could I have your name please?

USER: Sure, my name is Mary Parker.

ASSISTANT: Ok, do you need direct or connecting flight?

USER: I would like to fly in single connected flight.

ASSISTANT: Ok, may I know your departure and arrival day?

USER: I have already provided.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: The economy class with flight number 1004 of Frontier airline is available having fare as 100 and connection as 1, is it ok for you?

USER: Do not proceed, I prefer business class. Thank you.

ASSISTANT: Sorry, there is no flight with your requested class.

USER: Ok, no issues. Thank you for providing information.

ASSISTANT: You are welcome.