You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Kevin Thompson here.

ASSISTANT: How may I be of your service?

USER: Can you book a flight ticket for my airport codes that is from CLT to DCA?

ASSISTANT: Sure, we are here to help you. May I know your planned travelling dates to proceed further?

USER: The trip dates are from Jan 05 to Jan 07.

ASSISTANT: Would you like to travel in a connecting flight or a direct flight?

USER: I prefer a stopover flight.

ASSISTANT: Is there any other preferences that you would like to add before booking?

USER: No.

ASSISTANT: Ok, please wait a while.

USER: Sure.

ASSISTANT: Ok, there is an UA airline with flight number 1001 leaving from CLT on Jan 5th with 1 stop over in the midway and the estimate is 100. Shall I book the ticket?

USER: I am fine with the airlines. You can book it.

ASSISTANT: Your ticket has been confirmed with an economy class ticket.

USER: Thank you.

ASSISTANT: It's pleasure to serve you.