You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I have a business meeting in Charlotte. Can you help me for booking a flight ticket from DCA to CLT?

ASSISTANT: Sure, may I know your travel dates?

USER: My travelling dates are Mar 29 and Mar 31.

ASSISTANT: Do you have any preferences?

USER: My return time is evening.

ASSISTANT: Do you have any other preferences?

USER: I prefer to book a economy class.

ASSISTANT: May I know your name?

USER: My name is Jonathan Gonzalez.

ASSISTANT: Flight-1009 is available in Sothwest airlines with single connection and the ticket fare is 100. Can I proceed?

USER: Ok, proceed for booking.

ASSISTANT: Your booking is confirmed.

USER: Thank you for booking.

ASSISTANT: Thank you for reaching us.