You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Barbara Anderson here.

ASSISTANT: How can I aid you today?

USER: I want to travel from DCA to HOU for attending a Seminar. Can you please help me for booking the flight ticket?

ASSISTANT: I am gleeful to help you with that booking, may I know your preferable dates?

USER: My travelling dates are from 01/15 to 01/17.

ASSISTANT: Please wait for some time.

USER: Ok, I will wait.

ASSISTANT: There is a flight with Hawaiian airline having one connection and airfare is 200. Shall I proceed to booking?

USER: Please proceed for booking the flight ticket.

ASSISTANT: Your ticket is confirmed with the flight number 1022.

USER: Thanks for helping me.

ASSISTANT: Thank you for opting us.