You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I serve you today?

USER: Could you book my ticket in a direct flight?

ASSISTANT: Sure, may I know your airport codes?

USER: I want to travel from CLT to MSP.

ASSISTANT: Can you please share your planned trip dates?

USER: I want to travel on Sept 6 and Sept 8.

ASSISTANT: Is there any class preference?

USER: I have no other preferences.

ASSISTANT: May I know your good name to proceed further?

USER: Joseph Moore here.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: Please be on hold.

USER: Sure.

ASSISTANT: We found a direct flight of fare 100 with airline Delta and number is 1000. Can I proceed?

USER: Please book my ticket.

ASSISTANT: Your ticket has been confirmed in economy class.

USER: Thank you for assisting me.

ASSISTANT: Thank you.