You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I am Angela Allen, I want to book a flight ticket from DC-DCA to DC-IAD.

ASSISTANT: OK, Angela. Can you please tell me your travelling dates ?

USER: My travelling dates are from June 21 to June 23. My price limit is 200 and connection limit 1.

ASSISTANT: OK. Hold on a moment. I will check and get back to you.

USER: Sure, I will be waiting.

ASSISTANT: Thanks for waiting. I am happy to inform you that there is a flight of Frontier airline is available according to your specifications. The flight number is 1001 and the price is 100. Shall I proceed for booking?

USER: OK,you can proceed.

ASSISTANT: OK. Your ticket has been confirmed. Thank you for choosing us. Have a good day.

USER: Thank you for your service.